428 was the smallest number without a nBAB on 7 May 2017.
MathBabbler Number Analyst (MBNA) output: ========================================= 428 is natural, counting, whole, integer 428 is even (not odd) 428 proper divisors are: 1,2,4,107,214, 428 has 5 proper divisors 428 is deficient (sum of divisors is 328; ratio: 0.766355) 428 is unhappy 428 is not a Squarefree Number: 4, 428 is composite (not prime) 428 has the prime factors: 2*2*107 (sum=111) 428 is a 107-smooth number 428 in octal is 0654 428 in hexadecimal is 0x1ac 428 in binary is 110101100 (is odious) 428 nearest square numbers: -28...13 (400...441 [21]) sqrt(428) = 20.6882 ln(428) = 6.05912 log(428) = 2.63144 428! is 1.24392e+942 428 is 136.237 Pi years 428 is 21 score and 8 years 428 written as a Roman numeral is CDXXVIII 428 is 108^2 - 106^2 and 2 * (108 + 106) 428 is a multiple of 2 & it contains a 2 (A121022) 428 is a multiple of 4 & it contains a 4 (A121024) _____________________________________________________ 428 reciprocal is 0.0023364485981308411214953271028037383177570093457943925 remainders: 1,10,100,144,156,276,192,208,368,256,420,348,56,132,36,360,176,48,52,92,64,212,408,228,140,116,304,44,12,120,344,16,160,316,164,356,136,76,332,324,244,300,4,40,400,148,196,248,340,404,188,168,396,108,224,100
Creator: Gerald Thurman
[gthurman@gmail.com]
Created: 07 May 2017