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87036884 = 22111978111
BaseRepresentation
bin1010011000000…
…01001111010100
320001202221011022
411030001033110
5134240140014
612345300312
72104541564
oct514011724
9201687138
1087036884
1145148110
1225194698
131505531c
14b7b8da4
157993a8e
hex53013d4

87036884 has 12 divisors (see below), whose sum is σ = 166161408. Its totient is φ = 39562200.

The previous prime is 87036883. The next prime is 87036919. The reversal of 87036884 is 48863078.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 1978111 = 87036884 / (8 + 7 + 0 + 3 + 6 + 8 + 8 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87036881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 989012 + ... + 989099.

It is an arithmetic number, because the mean of its divisors is an integer number (13846784).

Almost surely, 287036884 is an apocalyptic number.

It is an amenable number.

87036884 is a deficient number, since it is larger than the sum of its proper divisors (79124524).

87036884 is a wasteful number, since it uses less digits than its factorization.

87036884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1978126 (or 1978124 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 44.

The square root of 87036884 is about 9329.3560335106. The cubic root of 87036884 is about 443.1673720045.

The spelling of 87036884 in words is "eighty-seven million, thirty-six thousand, eight hundred eighty-four".

Divisors: 1 2 4 11 22 44 1978111 3956222 7912444 21759221 43518442 87036884