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87152804 = 2221788201
BaseRepresentation
bin1010011000111…
…01100010100100
320001222211011122
411030131202210
5134302342204
612351553112
72105533544
oct514354244
9201884148
1087152804
1145217212
122522b798
131509600b
14b809324
1579b80be
hex531d8a4

87152804 has 6 divisors (see below), whose sum is σ = 152517414. Its totient is φ = 43576400.

The previous prime is 87152783. The next prime is 87152831. The reversal of 87152804 is 40825178.

It can be written as a sum of positive squares in only one way, i.e., 83905600 + 3247204 = 9160^2 + 1802^2 .

It is a super-2 number, since 2×871528042 = 15191222490124832, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10894097 + ... + 10894104.

It is an arithmetic number, because the mean of its divisors is an integer number (25419569).

Almost surely, 287152804 is an apocalyptic number.

It is an amenable number.

87152804 is a deficient number, since it is larger than the sum of its proper divisors (65364610).

87152804 is a wasteful number, since it uses less digits than its factorization.

87152804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21788205 (or 21788203 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 87152804 is about 9335.5666137627. The cubic root of 87152804 is about 443.3640287539.

The spelling of 87152804 in words is "eighty-seven million, one hundred fifty-two thousand, eight hundred four".

Divisors: 1 2 4 21788201 43576402 87152804