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# 12

Number 12 (twelve) is an even two-digits composite number and natural number following 11 and preceding 13.

## Properties of the number 12

 Nominal 12 Cardinal twelve Ordinal 12th Number of digits 2 Sum of digits 3 Product of digits 2 Number parity Even
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## Prime Factorization of 12

 Prime factorization 2 x 2 x 3 Prime factorization in exponent form 22 x 3 Prime factors 2, 3 Number of distinct prime factors ω(n) 2 Total number of prime factors Ω(n) 3 Sum of prime factors 5 Product of prime factors 6
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## Divisors of 12

 List of proper divisors 1, 2, 3, 4, 6 List of all dividers 1, 2, 3, 4, 6, 12 Number of divisors d(n) 6 Sum of all divisors σ(n) 28 Aliquot sum 16 12 is an abundant number , because the sum of its proper divisors (16) is greater than itself. Its abundance is 4.
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## Prime numbers

 Is 12 a prime number? No Is 12 a semiprime number? No Is 12 a Chen prime number? No Is 12 a Mersenne prime number? No
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## Sequences

 Is 12 a Catalan number? No Is 12 a Fibonacci number? No Is 12 a Idoneal number? Yes: I10
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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.
 12 is not a Happy number 12 is a Humble number 12 is not a Münchhausen number 12 is not a Perfect number 12 is not a Perfect square 12 is not a Palindrome
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## Numeric Bases of 12

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
2Binary11002
3Ternary1103
4Quaternary304
5Quinary225
6Senary206
7Septenary157
8Octal148
9Nonary139
10Decimal12
12Duodecimal1012
20Vigesimalc20
36Base36c36
60SexagesimalC60
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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 12 (n2) 144 Cube of 12 (n3) 1728 Square root of 12 3.4641 Natural Logarithm (ln) of 12 2.48491 Decimal Logarithm (log) of 12 1.07918
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## Trigonometry

Trigonometry is the study of the relationship between the angles and sides of a triangle.
 Sine of 12 -0.536573 Cosecant of 12 -1.86368 Cosine of 12 0.843854 Secant of 12 1.18504 Tangent of 12 -0.63586 Cotangent of 12 -1.57267
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## Number parity

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

### Is 12 an Even Number?

Yes, the number 12 is an even number.

### Is 12 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 12 in words is "twelve", meaning that: 12 is an aban number (a number without the letter a) 12 is not an eban number (as it contains the letter e) 12 is an iban number (a number without the letter i) 12 is an oban number (a number without the letter o) 12 is not a tban number (as it contains the letter t) 12 is an uban number (a number without the letter u)
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## Numeral systems

How to write 12 in other number systems?
 Bengali numerals ১২ Eastern Arabic numerals ١٢ Hieroglyphs numeralsused in Ancient Egypt 𓎆𓏻 Khmer numerals ១២ Japanese numerals 十二 Roman numerals XII Thai numerals ๑๒
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## Translation

How do you say 12 in 38 different languages?
 Arabic إثنا عشر Croatian dvanaest Czech dvanáct Danish tolv Dutch twaalf Estonian wuieve Faroese tólv Filipino labíng-dalawá Finnish kaksitoista French douze Greek δώδεκα German zwölf Hebrew שתים עשרה Hindi बारह Hungarian tizen­kettő Icelandic tólf Indonesian dua belas Italian dodici Japanese 十二 Korean 십이 Latvian divpadsmit Lithuanian dvylika Norwegian tolv Persian دوازده Polish dwanaście Portuguese doze Romanian doisprezece Russian двенадцать Serbian дванаест Slovak dvanásť Slovene dvanajst Spanish doce Swahili kumi na mbili Swedish tolv Thai สิบ​สอง Turkish on iki Ukrainian дванадцять Vietnamese mười hai
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## Miscellaneous

 Number 12 reversed 21 ASCII Code 12 Unicode Character U+000C Unix Timestamp Thu, 01 Jan 1970 00:00:12 +0000
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