About the Number 154 (one hundred fifty-four)

While working on a nBAB for the number 153, MathBabbler observed from the MBNA output for 153 that it was a Ruth-Aaron Pair with the number 154.

   MathBabbler Number Analyst (MBNA) output:
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   154 is a natural, whole, integer
   154 is even
   154 proper divisors are: 1,2,7,11,14,22,77,
   154 is deficient (sum of divisors is 134)
   154 is unhappy
   154 is not a Harshad number
   154 is not prime
   154 has the prime factors: 2*7*11 (sum=20)
   154 is sphenic (had 3 unique prime factors)
   154 sum of prime factors is: 20
   154 and 153 are a Ruth-Aaron pair (distinct prime factors)
   154 in octal is 0232
   154 in hexadecimal is 0x9a
   154 in binary is 10011010 (is evil)
   154 nearest square numbers: -10...15 (144...169 [13])
   sqrt(154) = 12.4097
   ln(154) = 5.03695
   log(154) = 2.18752
   154 reciprocal is .00649350649350649350649350649350
   154! is 3.08977e+271
   154 is 49.0197 Pi years
   154 is 7 score and 14 years
   154 written as a Roman numeral is CLIV

154₇ is repdigit 88₁₀.

   1 * 7^2 = 49; 5 * 7^1 = 35; 4 * 7^0 =  4
   49 + 35 + 4 = 88

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 10 July 2009