### About the Number 138 (one hundred thirty-eight)

This nBAB for the number 138 was created because on 17 February 2010 138 was the smallest number without a nBAB. In addition, there was already a nBAB for 139; therefore, this nBAB about 138 completes the set of nBABs in the 130-139 interval.

MathBabbler Number Analyst (MBNA) output:
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138 is a natural, whole, integer
138 is even
138 proper divisors are: 1,2,3,6,23,46,69,
138 is abundant (sum of divisors is 150)
138 is unhappy
138 is not a Harshad number
138 is not prime
138 has the prime factors: 2*3*23 (sum=28)
138 is sphenic (had 3 unique prime factors)
138 sum of prime factors is: 28
138 is the sum of 4 consecutive primes
138 = 29 + 31 + 37 + 41
138 in octal is 0212
138 in binary is 10001010 (is odious)
138 nearest square numbers: -17...6 (121...144 [12])
sqrt(138) = 11.7473
ln(138) = 4.92725
log(138) = 2.13988
138 reciprocal is .00724637681159420289855072463768
138! is 6.91779e+236
138 is 43.9268 Pi years
138 is 6 score and 18 years
138 written as a Roman numeral is CXXXVIII

138 is a triple-X Roman numeral.

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 17 February 2010