21000

Number 21000 is an even five-digits composite number and natural number following 20999 and preceding 21001.

Properties of the number 21000

Nominal	21000
Cardinal	twenty-one thousand
Cardinal twenty-one thousand
Ordinal	21,000th
Number of digits	5
Sum of digits	3
Product of digits	0
Number parity	Even

Previous number is 20999

Next number is 21001

Calculation was done in 0.0000398159 seconds

Prime Factorization of 21000

Prime factorization	2 x 2 x 2 x 3 x 5 x 5 x 5 x 7
Prime factorization in exponent form	2³ x 3 x 5³ x 7
Prime factors	2, 3, 5, 7
Number of distinct prime factors ω(n)	4
Total number of prime factors Ω(n)	8
Sum of prime factors	17
Product of prime factors	210

Calculation was done in 0.0000231266 seconds

Divisors of 21000

List of proper divisors	1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 25, 28, 30, 35, 40, 42, 50, 56, 60, 70, 75, 84, 100, 105, 120, 125, 140, 150, 168, 175, 200, 210, 250, 280, 300, 350, 375, 420, 500, 525, 600, 700, 750, 840, 875, 1000, 1050, 1400, 1500, 1750, 2100, 2625, 3000, 3500, 4200, 5250, 7000, 10500
List of all dividers	1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 25, 28, 30, 35, 40, 42, 50, 56, 60, 70, 75, 84, 100, 105, 120, 125, 140, 150, 168, 175, 200, 210, 250, 280, 300, 350, 375, 420, 500, 525, 600, 700, 750, 840, 875, 1000, 1050, 1400, 1500, 1750, 2100, 2625, 3000, 3500, 4200, 5250, 7000, 10500, 21000
Number of divisors d(n)	64
Sum of all divisors σ(n)	74880
Aliquot sum	53880
21000 is an abundant number , because the sum of its proper divisors (53880) is greater than itself. Its abundance is 32880.

Calculation was done in 0.0000290871 seconds

Prime numbers

Is 21000 a prime number?	No
Is 21000 a semiprime number?	No
Is 21000 a Chen prime number?	No
Is 21000 a Mersenne prime number?	No

Previous prime is 20983

Next prime is 21001

Calculation was done in 0.0011010170 seconds

Sequences

Is 21000 a Catalan number?	No
Is 21000 a Fibonacci number?	No
Is 21000 a Idoneal number?	No

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Number theory

Number theory is a branch of pure mathematics devoted primarily to the study of the integers and integer-valued functions.

21000 is not a Happy number

21000 is a Humble number

21000 is not a Münchhausen number

21000 is not a Perfect number

21000 is not a Perfect square

21000 is not a Palindrome

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Numeric Bases of 21000

In mathematics, a base or radix of a numeral system is the number of unique digits, including zero, used to represent numbers in that system.

Base	System	Value
2	Binary	101001000001000₂
3	Ternary	1001210210₃
4	Quaternary	11020020₄
5	Quinary	1133000₅
6	Senary	241120₆
7	Septenary	115140₇
8	Octal	51010₈
9	Nonary	31723₉
10	Decimal	21000
12	Duodecimal	101a0₁₂
16	Hexadecimal	5208₁₆
20	Vigesimal	2ca0₂₀
36	Base36	g7c₃₆
60	Sexagesimal	5o0₆₀

Calculation was done in 0.0000188351 seconds

Mathematical operations

Mathematical operations are actions that are performed on numbers or mathematical expressions to find a numerical result.

Square of 21000 (n²)	441000000
Cube of 21000 (n³)	9261000000000
Square root of 21000	144.91376746189
Natural Logarithm (ln) of 21000	9.9522777167056
Decimal Logarithm (log) of 21000	4.3222192947339

Calculation was done in 0.0000090599 seconds

Trigonometry

Trigonometry is the study of the relationship between the angles and sides of a triangle.

Sine of 21000	0.99971423939709
Cosecant of 21000	1.0002858422854
Cosine of 21000	-0.023904801749939
Secant of 21000	-41.832599594872
Tangent of 21000	-41.82064548599
Cotangent of 21000	-0.023911634753103

Calculation was done in 0.0000050068 seconds

Number parity

Parity is the property of an integer of whether it is even or odd.

Is 21000 an Even Number?

Yes, the number 21000 is an even number.

Is 21000 an Odd Number?

Previous even number is 20998

Next even number is 21002

Calculation was done in 0.0000030994 seconds

Ban number

In recreational mathematics, a ban number is a number that does not contain a particular letter when spelled out in English; in other words, the letter is "banned".

The spelling of 21000 in words is "twenty-one thousand", meaning that:

21000 is not an aban number (as it contains the letter a)

21000 is not an eban number (as it contains the letter e)

21000 is an iban number (a number without the letter i)

21000 is not an oban number (as it contains the letter o)

21000 is not a tban number (as it contains the letter t)

21000 is not an uban number (as it contains the letter u)

Calculation was done in 0.0000021458 seconds

Numeral systems

How to write 21000 in other number systems?

Bengali numerals	২১০০০
Eastern Arabic numerals	٢١٬٠٠٠
Hieroglyphs numeralsused in Ancient Egypt	𓂭𓂭𓆼
Khmer numerals	២១០០០
Japanese numerals	二万千
Roman numerals	n/a
Thai numerals	๒๑๐๐๐

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Translation

How do you say 21000 in 38 different languages?

Arabic	واحد و عشرون ألف
Croatian	dvadeset i jedna tisuća
Czech	dvacet jedna tisíc
Danish	en og tyve tusinde
Dutch	éénentwintigduizend
Estonian	akpe blaeve vɔ ɖekɛ
Faroese	tjúgoeitt tusin
Filipino	dalawáng pû’t isáng libó
Finnish	kaksikymmentäyksituhatta
French	vingt et un mille
Greek	είκοσι μία χίλιάδες
German	einundzwanzigtausend
Hebrew	עשרים ואחד אלף
Hindi	इक्कीस हज़ार
Hungarian	huszonegyezer
Icelandic	tuttugu og eitt þúsund
Indonesian	dua puluh satu ribu
Italian	ventunomila
Japanese	二万千
Korean	이만 천
Latvian	divdesmit viens tūkstoši
Lithuanian	dvidešimt vienas tūkstantis
Norwegian	tjueett tusen
Persian	بیست و یک هزار
Polish	dwadzieścia jeden tysięcy
Portuguese	vinte e um mil
Romanian	douăzeci şi una mii
Russian	двадцать одна тысяча
Serbian	двадесет и једна хиљада
Slovak	dvadsaťjedna tisíc
Slovene	dvaset ena tisuću
Spanish	veintiún mil
Swahili	elfu ishirini na moja
Swedish	tjugoentusen
Thai	สองหมื่นหนึ่งพัน
Turkish	yirmi bir bin
Ukrainian	двадцять одна тисяча
Vietnamese	hai mươi mốt nghìn

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Miscellaneous

Number 21000 reversed	00012
Unicode Character	U+5208	刈
Unix Timestamp	Thu, 01 Jan 1970 05:50:00 +0000

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