MathBabbler noticed that there were nBABs (number BABs) for zero through eleven and thirteen; therefore this nBAB about the number twelve was created to fill the gap.

Observe... this nBAB was created on November 13th, which is 11/13. The average of 11 and 13 is 12.

MathBabbler Number Analyst (MBNA) output: ========================================= 12 is a natural, whole, integer 12 is even 12 proper divisors are: 1,2,3,4,6, 12 is abundant (sum of divisors is 16) 12 is unhappy 12 is a Harshad number 12 is not prime 12 is undulating 12 has the prime factors: 2*2*3 12 in octal is 014 12 in hexadecimal is 0xc 12 in binary is 1100 (is evil) 12 nearest square numbers: -3...4 (9...16 [4]) sqrt(12) = 3.4641 ln(12) = 2.48491 log(12) = 1.07918 12 reciprocal is .08333333333333333333333333333333 12! is 4.79002e+08 12 is 3.81972 Pi years 12 is 0 score and 12 years

`written as a Roman numeral is`

12`.`

XIIA unit of

`is often called a dozen.`

12A day is split into two

`parts (a.m. and p.m.).`

12

12 = sqrt(144)The Wikipedia says

`is a`

12highly composite number(a positive integer with more divisors than any smaller positive integer).The Wikipedia also stated that

`is a`

12superfactorial(it is a product of the 1st three factorials`).`

1! * 2! * 3! = 1 * 2 * 6 = 12## Update::2012.12.12 (redone on 2013.05.02)

14

_{8}equals`and`

12`equals 14. In other words, octal (base-8) 14 equals decimal (base-10)`

12_{12}`and duodecimal (base-`

12`)`

12`equals decimal (base-10) 14.`

12This nBAB was four years old when this update was made. The MBNA on 12/12/12 produced the following additional information about the number

`.`

1212 is refactorable (evenly divisable by # of divisors) 12 is not a Squarefree Number: 4, 12 is pentagonal 12 is pronic (oblong) 12 is the sum of 2 consecutive primes (5+7) 12 = 4^2 - 2^2 and 2 * (4 + 2) = 12

**Creator:** Gerald Thurman
[gthurman@gmail.com]

**Created:** 13 November 2008 (posted 15 November 2008)

This work is licensed under a Creative Commons Attribution 3.0 United States License.