About the Number 48 (forty-eight)

MathBabbler held off creating this nBAB about the number 48 until 4 August 2009 because U.S. President Barack Obama was born on 4 August 1961 (i.e. 48 years ago).

   MathBabbler 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

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

[NumberGossip.com] 48 is equal to the difference of the squares of its digits (i.e. 48 = 8^2 - 4^2).


Creator: Gerald Thurman [gthurman@gmail.com]
Created: 04 August 2009

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