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87028648 = 2371554083
BaseRepresentation
bin1010010111111…
…11001110101000
320001202111212021
411023333032220
5134234404043
612345154224
72104505560
oct513771650
9201674767
1087028648
1145141a03
122518b974
1315051655
14b7b5da0
1579913ed
hex52ff3a8

87028648 has 16 divisors (see below), whose sum is σ = 186490080. Its totient is φ = 37297968.

The previous prime is 87028621. The next prime is 87028657. The reversal of 87028648 is 84682078.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 776986 + ... + 777097.

It is an arithmetic number, because the mean of its divisors is an integer number (11655630).

Almost surely, 287028648 is an apocalyptic number.

It is an amenable number.

87028648 is an abundant number, since it is smaller than the sum of its proper divisors (99461432).

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

87028648 is a wasteful number, since it uses less digits than its factorization.

87028648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1554096 (or 1554092 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 43.

The square root of 87028648 is about 9328.9146206834. The cubic root of 87028648 is about 443.1533930971.

The spelling of 87028648 in words is "eighty-seven million, twenty-eight thousand, six hundred forty-eight".

Divisors: 1 2 4 7 8 14 28 56 1554083 3108166 6216332 10878581 12432664 21757162 43514324 87028648