MathBabbler created a nBAB for the number 7777 and that prompted the creation of a nBAB for 777 and that prompted the creation a nBAB for 77. The nBAB for 7777 was the 142nd nBAB and the nBAB for 777 was the 143rd nBAB. MathBabbler has used the number

`; therefore, he delayed posting the nBAB for 77 so that he could make this nBAB about the number`

144`nBAB #`

144`.`

144MathBabbler Number Analyst (MBNA) output: ========================================= 144 is a natural, whole, integer 144 is even 144 proper divisors are: 1,2,3,4,6,8,9,12,16,18,24,36,48,72, 144 is abundant (sum of divisors is 259) 144 is unhappy 144 is a Harshad number 144 is not prime 144 has the prime factors: 2*2*2*2*3*3 144 is a Fibonacci number 144 in octal is 0220 144 in hexadecimal is 0x90 144 in binary is 10010000 (is evil) 144 nearest square numbers: 144 is square (144 is square) sqrt(144) = 12 ln(144) = 4.96981 log(144) = 2.15836 144 is 12^2 144 reciprocal is .00694444444444444444444444444444 144! is 5.55029e+249 144 is 45.8366 Pi years 144 is 7 score and 4 years 144 written as a Roman numeral is CXLIVMathBabbler was a bit surprised on 29 March 2009 that he didn't have a nBAB for the number

`.`

144

`[Wikipedia]`

`is a`

144sum-product number. A sum-product number is an "integer that in a given base is equal to the sum of its digits times the product of its digits."sum_digits(144) = 9 multiply_digits(144) = 16 9 * 16 =144OEIS.org::id:A038369

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

**Created:** 29 March 2009

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