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20

Number 20 (twenty) is an even two-digits composite number and natural number following 19 and preceding 21.

Properties of the number 20

Nominal20
Cardinaltwenty
Ordinal20th
Number of digits2
Sum of digits2
Product of digits0
Number parityEven
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Prime Factorization of 20

Prime factorization2 x 2 x 5
Prime factorization in exponent form22 x 5
Prime factors2, 5
Number of distinct prime factors ω(n)2
Total number of prime factors Ω(n)3
Sum of prime factors7
Product of prime factors10
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Divisors of 20

List of proper divisors 1, 2, 4, 5, 10
List of all dividers1, 2, 4, 5, 10, 20
Number of divisors d(n)6
Sum of all divisors σ(n)42
Aliquot sum 22
20 is an abundant number , because the sum of its proper divisors (22) is greater than itself. Its abundance is 2.
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Prime numbers

Is 20 a prime number?No
Is 20 a semiprime number?No
Is 20 a Chen prime number?No
Is 20 a Mersenne prime number?No
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Sequences

Is 20 a Catalan number?No
Is 20 a Fibonacci number?No
Is 20 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.
20 is not a Happy number
20 is a Humble number
20 is not a Münchhausen number
20 is not a Perfect number
20 is not a Perfect square
20 is not a Palindrome
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Numeric Bases of 20

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.
BaseSystemValue
2Binary101002
3Ternary2023
4Quaternary1104
5Quinary405
6Senary326
7Septenary267
8Octal248
9Nonary229
10Decimal20
12Duodecimal1812
16Hexadecimal1416
20Vigesimal1020
36Base36k36
60SexagesimalK60
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Mathematical operations

Mathematical operations are actions that are performed on numbers or mathematical expressions to find a numerical result.
Square of 20 (n2)400
Cube of 20 (n3)8000
Square root of 204.4721359549996
Natural Logarithm (ln) of 202.995732273554
Decimal Logarithm (log) of 201.301029995664
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Trigonometry

Trigonometry is the study of the relationship between the angles and sides of a triangle.
Sine of 200.91294525072763
Cosecant of 201.095355936408
Cosine of 200.40808206181339
Secant of 202.4504875209567
Tangent of 202.2371609442247
Cotangent of 200.44699510894892
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Number parity

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

Is 20 an Even Number?

Yes, the number 20 is an even number.

Is 20 an Odd Number?

No
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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 20 in words is "twenty", meaning that:
20 is an aban number (a number without the letter a)
20 is not an eban number (as it contains the letter e)
20 is an iban number (a number without the letter i)
20 is an oban number (a number without the letter o)
20 is not a tban number (as it contains the letter t)
20 is an uban number (a number without the letter u)
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Numeral systems

How to write 20 in other number systems?
Bengali numerals২০
Eastern Arabic numerals٢٠
Hieroglyphs numeralsused in Ancient Egypt𓎇
Khmer numerals២០
Japanese numerals二十
Roman numeralsXX
Thai numerals๒๐
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Translation

How do you say 20 in 38 different languages?
Arabicعشرون
Croatiandvadeset
Czechdvacet
Danish tyve
Dutchtwintig
Estonianblaeve
Faroesetjúgo
Filipinodalawáng pû
Finnishkaksi­kymmentä
Frenchvingt
Greekείκοσι
Germanzwanzig
Hebrewעשרים
Hindiबीस
Hungarianhúsz
Icelandictuttugu
Indonesiandua puluh
Italianventi
Japanese二十
Korean이십
Latviandivdesmit
Lithuaniandvidešimt
Norwegiantjue
Persianبیست
Polishdwadzieścia
Portuguesevinte
Romaniandouăzeci
Russianдвадцать
Serbianдвадесет
Slovakdvadsať
Slovenedvaset
Spanish veinte
Swahiliishirini
Swedishtjugo
Thaiยี่​สิบ
Turkishyirmi
Ukrainianдвадцять
Vietnamesehai mươi
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Miscellaneous

Number 20 reversed02
ASCII Code20
Unicode CharacterU+0014
Unix TimestampThu, 01 Jan 1970 00:00:20 +0000
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