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78

Number 78 (seventy-eight) is an even two-digits composite number and natural number following 77 and preceding 79.

Properties of the number 78

Nominal78
Cardinalseventy-eight
Ordinal78th
Number of digits2
Sum of digits15
Product of digits56
Number parityEven
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Prime Factorization of 78

Prime factorization2 x 3 x 13
Prime factors2, 3, 13
Number of distinct prime factors ω(n)3
Total number of prime factors Ω(n)3
Sum of prime factors18
Product of prime factors78
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Divisors of 78

List of proper divisors 1, 2, 3, 6, 13, 26, 39
List of all dividers1, 2, 3, 6, 13, 26, 39, 78
Number of divisors d(n)8
Sum of all divisors σ(n)168
Aliquot sum 90
78 is an abundant number , because the sum of its proper divisors (90) is greater than itself. Its abundance is 12.
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Prime numbers

Is 78 a prime number?No
Is 78 a semiprime number?No
Is 78 a Chen prime number?No
Is 78 a Mersenne prime number?No
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Sequences

Is 78 a Catalan number?No
Is 78 a Fibonacci number?No
Is 78 a Idoneal number?Yes: I32
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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.
78 is not a Happy number
78 is not a Humble number
78 is not a Münchhausen number
78 is not a Perfect number
78 is not a Perfect square
78 is not a Palindrome
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Numeric Bases of 78

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
2Binary10011102
3Ternary22203
4Quaternary10324
5Quinary3035
6Senary2106
7Septenary1417
8Octal1168
9Nonary869
10Decimal78
12Duodecimal6612
16Hexadecimal4e16
20Vigesimal3i20
36Base362636
60Sexagesimal1I60
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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 78 (n2)6084
Cube of 78 (n3)474552
Square root of 788.8317608663278
Natural Logarithm (ln) of 784.3567088266896
Decimal Logarithm (log) of 781.8920946026905
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Trigonometry

Trigonometry is the study of the relationship between the angles and sides of a triangle.
Sine of 780.51397845598754
Cosecant of 781.9456068408133
Cosine of 78-0.85780309324499
Secant of 78-1.165768703651
Tangent of 78-0.59917999834112
Cotangent of 78-1.6689475662882
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Number parity

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

Is 78 an Even Number?

Yes, the number 78 is an even number.

Is 78 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 78 in words is "seventy-eight", meaning that:
78 is an aban number (a number without the letter a)
78 is not an eban number (as it contains the letter e)
78 is not an iban number (as it contains the letter i)
78 is an oban number (a number without the letter o)
78 is not a tban number (as it contains the letter t)
78 is an uban number (a number without the letter u)
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Numeral systems

How to write 78 in other number systems?
Bengali numerals৭৮
Eastern Arabic numerals٧٨
Hieroglyphs numeralsused in Ancient Egypt𓎌𓐁
Khmer numerals៧៨
Japanese numerals七十八
Roman numeralsLXXVIII
Thai numerals๗๘
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Translation

How do you say 78 in 38 different languages?
Arabicثمانية و سبعون
Croatiansedamdeset i osam
Czechsedmdesát osm
Danish otte og halvfjerds
Dutchachtenzeventig
Estonianblaadre vɔ enyi
Faroesesjeyti­átta
Filipinopitóng pû’t waló
Finnishseitsemän­kymmentä­kahdeksan
Frenchsoixante-dix-huit
Greekεβδομήντα οκτώ
Germanacht­und­siebzig
Hebrewשבעים ושמונה
Hindiअठहत्तर
Hungarianhetven­nyolc
Icelandicsjötíu og átta
Indonesiantujuh puluh delapan
Italiansettantotto
Japanese七十八
Korean칠십팔
Latvianseptiņdesmit astoņi
Lithuanianseptyniasdešimt aštuoni
Norwegiansytti­åtte
Persianهفتاد و هشت
Polishsiedemdziesiąt osiem
Portuguesesetenta e oito
Romanianşaptezeci şi opt
Russianсемьдесят восемь
Serbianседамдесет и осам
Slovaksedemdesiat­osem
Slovenesedemdeset osem
Spanish setenta y ocho
Swahilisabini na nane
Swedishsjutioåtta
Thaiเจ็ด​สิบ​แปด
Turkishyetmiş sekiz
Ukrainianсімдесят вісім
Vietnamesebảy mươi tám
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Miscellaneous

Number 78 reversed87
ASCII Code78N
Unicode CharacterU+004EN
Unix TimestampThu, 01 Jan 1970 00:01:18 +0000
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