This is BAB #1800 and it was created on 24 September 2008 (the 1322nd day of BABbling).

MathBabbler Number Analyst (MBNA) output: ========================================= 1800 is a natural, whole, integer 1800 is even 1800 proper divisors are: 1,2,3,4,5,6,8,9,10,12,15,18,20,24,25, 30,36,40,45,50,60,72,75,90,100,120,150, 180,200,225,300,360,450,600,900 1800 is abundant (sum of divisors is 4245) 1800 is unhappy 1800 is a Harshad number 1800 is not prime 1800 has the prime factors: 2*2*2*3*3*5*5 1800 in octal is 03410 1800 in hexadecimal is 0x708 1800 in binary is 11100001000 (is evil) 1800 nearest square numbers: -36...49 (1764 [42]...1849 [43]) sqrt(1800) = 42.4264 ln(1800) = 7.49554 log(1800) = 3.25527 1800 reciprocal is .00055555555555555555555555555555 1800! is inf 1800 is 572.958 Pi years 1800 is 90 scoreyears

`written as a Roman numeral is`

1800`.`

MDCCC

`, which is the "Answer to Life, the Universe, and Everything."`

floor(sqrt(1800)) = 42## Update::2010.06.10

`tweeted tweet #`

@nanofoo`on 10 June 2010 (i.e. his 933rd day of tweeting).`

1800Numerous changes were made to the MBNA since this nBAB was created. The following is updated MBNA output for the number

`.`

1800MathBabbler Number Analyst (MBNA) output: ========================================= 1800 is a natural, whole, integer 1800 is even 1800 proper divisors are: 1,2,3,4,5,6,8,9,10,12,15,18,20,24,25,30, 36,40,45,50,60,72,75,90,100,120,150,180, 200,225,300,360,450,600,900, 1800 is refactorable (evenly divisable by # of divisors) 1800 is abundant (sum of divisors is 4245) 1800 is unhappy 1800 is a Harshad number 1800 is not prime 1800 has the prime factors: 2*2*2*3*3*5*5 (sum=22) 1800 sum of prime factors is: 22 1800 is the sum of 10 consecutive primes 1800 = 157 + 163 + 167 + 173 + 179 + 181 + 191 + 193 + 197 + 199 1800 in octal is 03410 1800 in hexadecimal is 0x708 1800 in binary is 11100001000 (is evil) 1800 nearest square numbers: -36...49 (1764...1849 [43]) sqrt(1800) = 42.4264 ln(1800) = 7.49554 log(1800) = 3.25527 1800 reciprocal is .00055555555555555555555555555555 1800 is an apocalyptic power 1800! is inf 1800 is 572.958 Pi years 1800 is 90 scoreyears 1800 written as a Roman numeral is MDCCC 1800 = 451^2 - 449^2 and 2 * (451 + 449) = 1800

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

**Created:** 23 September 2008

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