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87904488 = 23371927539
BaseRepresentation
bin1010011110101…
…01000011101000
320010102000021210
411033111003220
5140000420423
612420033120
72115114210
oct517250350
9203360253
1087904488
114568aa41
12255327a0
131529a1b9
14b963240
157ab5b93
hex53d50e8

87904488 has 64 divisors (see below), whose sum is σ = 264384000. Its totient is φ = 23792832.

The previous prime is 87904471. The next prime is 87904511. The reversal of 87904488 is 88440978.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10578 + ... + 16961.

It is an arithmetic number, because the mean of its divisors is an integer number (4131000).

Almost surely, 287904488 is an apocalyptic number.

It is an amenable number.

87904488 is an abundant number, since it is smaller than the sum of its proper divisors (176479512).

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

87904488 is a wasteful number, since it uses less digits than its factorization.

87904488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27574 (or 27570 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 48.

The square root of 87904488 is about 9375.7393308475. The cubic root of 87904488 is about 444.6350380513.

The spelling of 87904488 in words is "eighty-seven million, nine hundred four thousand, four hundred eighty-eight".

Divisors: 1 2 3 4 6 7 8 12 14 19 21 24 28 38 42 56 57 76 84 114 133 152 168 228 266 399 456 532 798 1064 1596 3192 27539 55078 82617 110156 165234 192773 220312 330468 385546 523241 578319 660936 771092 1046482 1156638 1542184 1569723 2092964 2313276 3139446 3662687 4185928 4626552 6278892 7325374 10988061 12557784 14650748 21976122 29301496 43952244 87904488