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87869152 = 257256039
BaseRepresentation
bin1010011110011…
…00011011100000
320010100012211001
411033030123200
5134443303102
612415201344
72114606200
oct517143340
9203305731
1087869152
1145666438
1225516254
13152870a7
14b954400
157aaa487
hex53cc6e0

87869152 has 36 divisors (see below), whose sum is σ = 201239640. Its totient is φ = 37657536.

The previous prime is 87869147. The next prime is 87869161. The reversal of 87869152 is 25196878.

It is a nialpdrome in base 14.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 26452 + ... + 29587.

It is an arithmetic number, because the mean of its divisors is an integer number (5589990).

Almost surely, 287869152 is an apocalyptic number.

It is an amenable number.

87869152 is an abundant number, since it is smaller than the sum of its proper divisors (113370488).

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

87869152 is a wasteful number, since it uses less digits than its factorization.

87869152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56063 (or 56048 counting only the distinct ones).

The product of its digits is 241920, while the sum is 46.

The square root of 87869152 is about 9373.8547033758. The cubic root of 87869152 is about 444.5754516760.

The spelling of 87869152 in words is "eighty-seven million, eight hundred sixty-nine thousand, one hundred fifty-two".

Divisors: 1 2 4 7 8 14 16 28 32 49 56 98 112 196 224 392 784 1568 56039 112078 224156 392273 448312 784546 896624 1569092 1793248 2745911 3138184 5491822 6276368 10983644 12552736 21967288 43934576 87869152