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# 80

Number 80 (eighty) is an even two-digits composite number and natural number following 79 and preceding 81.

## Properties of the number 80

 Nominal 80 Cardinal eighty Ordinal 80th Number of digits 2 Sum of digits 8 Product of digits 0 Number parity Even
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## Prime Factorization of 80

 Prime factorization 2 x 2 x 2 x 2 x 5 Prime factorization in exponent form 24 x 5 Prime factors 2, 5 Number of distinct prime factors ω(n) 2 Total number of prime factors Ω(n) 5 Sum of prime factors 7 Product of prime factors 10
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## Divisors of 80

 List of proper divisors 1, 2, 4, 5, 8, 10, 16, 20, 40 List of all dividers 1, 2, 4, 5, 8, 10, 16, 20, 40, 80 Number of divisors d(n) 10 Sum of all divisors σ(n) 186 Aliquot sum 106 80 is an abundant number , because the sum of its proper divisors (106) is greater than itself. Its abundance is 26.
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## Prime numbers

 Is 80 a prime number? No Is 80 a semiprime number? No Is 80 a Chen prime number? No Is 80 a Mersenne prime number? No
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## Sequences

 Is 80 a Catalan number? No Is 80 a Fibonacci number? No Is 80 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.
 80 is not a Happy number 80 is a Humble number 80 is not a Münchhausen number 80 is not a Perfect number 80 is not a Perfect square 80 is not a Palindrome
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## Numeric Bases of 80

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
2Binary10100002
3Ternary22223
4Quaternary11004
5Quinary3105
6Senary2126
7Septenary1437
8Octal1208
9Nonary889
10Decimal80
12Duodecimal6812
20Vigesimal4020
36Base362836
60Sexagesimal1K60
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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 80 (n2) 6400 Cube of 80 (n3) 512000 Square root of 80 8.94427 Natural Logarithm (ln) of 80 4.38203 Decimal Logarithm (log) of 80 1.90309
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## Trigonometry

Trigonometry is the study of the relationship between the angles and sides of a triangle.
 Sine of 80 -0.993889 Cosecant of 80 -1.00615 Cosine of 80 -0.110387 Secant of 80 -9.05902 Tangent of 80 9.00365 Cotangent of 80 0.111066
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## Number parity

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

### Is 80 an Even Number?

Yes, the number 80 is an even number.

### Is 80 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 80 in words is "eighty", meaning that: 80 is an aban number (a number without the letter a) 80 is not an eban number (as it contains the letter e) 80 is not an iban number (as it contains the letter i) 80 is an oban number (a number without the letter o) 80 is not a tban number (as it contains the letter t) 80 is an uban number (a number without the letter u)
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## Numeral systems

How to write 80 in other number systems?
 Bengali numerals ৮০ Eastern Arabic numerals ٨٠ Hieroglyphs numeralsused in Ancient Egypt 𓎍 Khmer numerals ៨០ Japanese numerals 八十 Roman numerals LXXX Thai numerals ๘๐
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## Translation

How do you say 80 in 38 different languages?
 Arabic ثمانون Croatian osamdeset Czech osmdesát Danish firs Dutch tachtig Estonian blaenyi Faroese áttati Filipino walóng pû Finnish kahdeksan­kymmentä French quatre-vingts Greek ογδόντα German achtzig Hebrew שמונים Hindi अस्सी Hungarian nyolcvan Icelandic áttatíu Indonesian delapan puluh Italian ottanta Japanese 八十 Korean 팔십 Latvian astoņdesmit Lithuanian aštuoniasdešimt Norwegian åtti Persian هشتاد Polish osiemdziesiąt Portuguese oitenta Romanian optzeci Russian восемьдесят Serbian осамдесет Slovak osemdesiat Slovene osemdeset Spanish ochenta Swahili themanini Swedish åttio Thai แปด​สิบ Turkish seksen Ukrainian вісімдесят Vietnamese tám mươi
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## Miscellaneous

 Number 80 reversed 08 ASCII Code 80 P Unicode Character U+0050 P Unix Timestamp Thu, 01 Jan 1970 00:01:20 +0000
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