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87538412 = 221310715733
BaseRepresentation
bin1010011011110…
…11101011101100
320002201102010102
411031323223230
5134402212122
612404130232
72112031013
oct515735354
9202642112
1087538412
114545a9a5
1225396978
131519c6a0
14b8a9a7a
157a42492
hex537baec

87538412 has 24 divisors (see below), whose sum is σ = 166528656. Its totient is φ = 40022208.

The previous prime is 87538379. The next prime is 87538439. The reversal of 87538412 is 21483578.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2303 + ... + 13430.

It is an arithmetic number, because the mean of its divisors is an integer number (6938694).

Almost surely, 287538412 is an apocalyptic number.

It is an amenable number.

87538412 is a deficient number, since it is larger than the sum of its proper divisors (78990244).

87538412 is a wasteful number, since it uses less digits than its factorization.

87538412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15857 (or 15855 counting only the distinct ones).

The product of its digits is 53760, while the sum is 38.

The square root of 87538412 is about 9356.1964494125. The cubic root of 87538412 is about 444.0169554978.

The spelling of 87538412 in words is "eighty-seven million, five hundred thirty-eight thousand, four hundred twelve".

Divisors: 1 2 4 13 26 52 107 214 428 1391 2782 5564 15733 31466 62932 204529 409058 818116 1683431 3366862 6733724 21884603 43769206 87538412