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89887070 = 257213103137
BaseRepresentation
bin1010101101110…
…01000101011110
320021010201212202
411112321011132
5141002341240
612530331502
72141012300
oct526710536
9207121782
1089887070
1146814539
1226129b92
1315812720
14bd1b970
157d58315
hex55b915e

89887070 has 96 divisors (see below), whose sum is σ = 206152128. Its totient is φ = 27965952.

The previous prime is 89887067. The next prime is 89887079. The reversal of 89887070 is 7078898.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89887079) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 656042 + ... + 656178.

It is an arithmetic number, because the mean of its divisors is an integer number (2147418).

Almost surely, 289887070 is an apocalyptic number.

89887070 is an abundant number, since it is smaller than the sum of its proper divisors (116265058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

89887070 is a wasteful number, since it uses less digits than its factorization.

89887070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274 (or 267 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 47.

The square root of 89887070 is about 9480.8791786416. The cubic root of 89887070 is about 447.9529573000.

The spelling of 89887070 in words is "eighty-nine million, eight hundred eighty-seven thousand, seventy".

Divisors: 1 2 5 7 10 13 14 26 35 49 65 70 91 98 103 130 137 182 206 245 274 455 490 515 637 685 721 910 959 1030 1274 1339 1370 1442 1781 1918 2678 3185 3562 3605 4795 5047 6370 6695 6713 7210 8905 9373 9590 10094 12467 13390 13426 14111 17810 18746 24934 25235 28222 33565 46865 50470 62335 65611 67130 70555 87269 93730 98777 124670 131222 141110 174538 183443 197554 328055 366886 436345 493885 656110 691439 872690 917215 987770 1284101 1382878 1834430 2568202 3457195 6420505 6914390 8988707 12841010 17977414 44943535 89887070