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87057924 = 223194167139
BaseRepresentation
bin1010011000001…
…10011000000100
320001211000000120
411030012120010
5134241323144
612345541540
72104660122
oct514063004
9201730016
1087057924
11451619a8
12251a48b0
1315061a85
14b7c2912
157999e19
hex5306604

87057924 has 96 divisors (see below), whose sum is σ = 223910400. Its totient is φ = 26231040.

The previous prime is 87057911. The next prime is 87057941. The reversal of 87057924 is 42975078.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 626247 + ... + 626385.

It is an arithmetic number, because the mean of its divisors is an integer number (2332400).

Almost surely, 287057924 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87057924, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111955200).

87057924 is an abundant number, since it is smaller than the sum of its proper divisors (136852476).

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

87057924 is a wasteful number, since it uses less digits than its factorization.

87057924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273 (or 271 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 87057924 is about 9330.4835887536. The cubic root of 87057924 is about 443.2030790513.

The spelling of 87057924 in words is "eighty-seven million, fifty-seven thousand, nine hundred twenty-four".

Divisors: 1 2 3 4 6 12 19 38 41 57 67 76 82 114 123 134 139 164 201 228 246 268 278 402 417 492 556 779 804 834 1273 1558 1668 2337 2546 2641 2747 3116 3819 4674 5092 5282 5494 5699 7638 7923 8241 9313 9348 10564 10988 11398 15276 15846 16482 17097 18626 22796 27939 31692 32964 34194 37252 52193 55878 68388 104386 108281 111756 156579 176947 208772 216562 313158 324843 353894 381833 433124 530841 626316 649686 707788 763666 1061682 1145499 1299372 1527332 2123364 2290998 4581996 7254827 14509654 21764481 29019308 43528962 87057924