About the Number 84 (eighty-four)

This nBAB about the number 84 was created as a result of working on a nBAB for the number 62, which was created because of Ron Silver dying at the age of 62. Sigmund Freud had an obsession with the number 62 thinking it was going to be his death age (62 or either 61). Freud died at the age of 83; therefore, while working on the nBAB for number 62, the nBAB for number 83 was updated. MathBabbler noticed that he had a nBAB for all of the eighties except for the number 84.

   MathBabbler Number Analyst (MBNA) output:
   =========================================
   84 is a natural, whole, integer
   84 is even
   84 proper divisors are: 1,2,3,4,6,7,12,14,21,28,42,
   84 is refactorable (evenly divisable by # of divisors)
   84 is abundant (sum of divisors is 140)
   84 is unhappy
   84 is a Harshad number
   84 is not prime
   84 is undulating
   84 has the prime factors: 2*2*3*7
   84 in octal is 0124
   84 in hexadecimal is 0x54
   84 in binary is 1010100 (is odious)
   84 nearest square numbers: -3...16 (81...100 [10])
   sqrt(84) = 9.16515
   ln(84) = 4.43082
   log(84) = 1.92428
   84 reciprocal is .01190476190476190476190476190476
   84! is 3.31424e+126
   84 is 26.738 Pi years
   84 is 4 score and 4 years
   84 written as a Roman numeral is LXXXIV
Update::2010.11.29

Actor Leslie Nielsen died at the age of 84 on 28 November 2010.

   MathBabbler Number Analyst (MBNA) output:
   =========================================
   84 is a natural, whole, integer
   84 is even
   84 proper divisors are: 1,2,3,4,6,7,12,14,21,28,42,
   84 is refactorable (evenly divisable by # of divisors)
   84 is abundant (sum of divisors is 140)
   84 is unhappy
   84 is a Harshad number
   84 is not prime
   84 has the prime factors: 2*2*3*7 (sum=14)
   84 is a hoax number
   84 sum of prime factors is: 14
   84 is undulating
   84 is the sum of 2 consecutive primes
   84 = 41 + 43
   84 in octal is 0124
   84 in hexadecimal is 0x54
   84 in binary is 1010100 (is odious)
   84 nearest square numbers: -3...16 (81...100 [10])
   sqrt(84) = 9.16515
   ln(84) = 4.43082
   log(84) = 1.92428
   84 reciprocal is .01190476190476190476190476190476
   84! is 3.31424e+126
   84 is 26.738 Pi years
   84 is 4 score and 4 years
   84 written as a Roman numeral is LXXXIV
   84 = 22^2 - 20^2 and 2 * (22 + 20) = 84

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Creator: Gerald Thurman [gthurman@gmail.com]
Created: 16 March 2009

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