MathBabbler held off creating this nBAB about the number

`until 4 August 2009 because U.S. President Barack Obama was born on 4 August 1961 (i.e.`

48`years ago).`

48MathBabbler Number Analyst (MBNA) output: ========================================= 48 is a natural, whole, integer 48 is even 48 proper divisors are: 1,2,3,4,6,8,12,16,24, 48 is abundant (sum of divisors is 76) 48 is unhappy 48 is a Harshad number 48 is not prime 48 has the prime factors: 2*2*2*2*3 (sum=11) 48 sum of prime factors is: 11 48 is undulating 48 in octal is 060 48 in hexadecimal is 0x30 48 in binary is 110000 (is evil) 48 nearest square numbers: -12...1 (36 [6]...49 [7]) sqrt(48) = 6.9282 ln(48) = 3.8712 log(48) = 1.68124 48 reciprocal is .02083333333333333333333333333333 48! is 1.24139e+61 48 is 15.2789 Pi years 48 is 2 score and 8 years 48 written as a Roman numeral is XLVIII

`in base-9 is 44 in base-10. Obama is the 44th President of the United States.`

48

`[NumberGossip.com]`

`is equal to the difference of the squares of its digits (i.e.`

48`= 8^2 - 4^2).`

48

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

**Created:** 04 August 2009

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