287was the smallest number that didn't have a nBAB on 14 April 2016. MathBabbler is trying to ensure that the numbers 0-300 have nBABs by the end of the Spring 2016 Semester. With the posting of this nBAB for287, 290 became the smallest number without a nBAB on 14 April 2016.MathBabbler Number Analyst (MBNA) output: ========================================= 287 is a natural, whole, integer 287 is odd 287 proper divisors are: 1,7,41, 287 has 3 proper divisors 287 is deficient (sum of divisors is 49; ratio: 0.170732) 287 is unhappy 287 is a Squarefree Number 287 is composite (not prime) 287 has the prime factors: 7*41 (sum=48) 287 is semiprime (biprime or 2-almost prime) 287 is a 41-smooth number 287 is pentagonal 287 is Arithmetic (A003601) 287 is the sum of 9 consecutive primes 287 = 17 + 19 + 23 + 29 + 31 + 37 + 41 + 43 + 47 287 in octal is 0437 287 in hexadecimal is 0x11f 287 in binary is 100011111 (is evil) 287 nearest square numbers: -31...2 (256...289 [17]) sqrt(287) = 16.9411 ln(287) = 5.65948 log(287) = 2.45788 287 reciprocal is .00348432055749128919860627177700 287 is an apocalyptic power 287! is 2.49888e+582 287 is 91.3549 Pi years 287 is 14 score and 7 years 287 written as a Roman numeral is CCLXXXVII 287 is 144^2 - 143^2 and 144 + 143 = 287 287 is a multiple of 7 & it contains a 7 (A121027)

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

**Created:** 14 April 2016

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