87123592 has 8 divisors (see below), whose sum is σ = 163356750. Its totient is φ = 43561792.

The previous prime is 87123587. The next prime is 87123601. The reversal of 87123592 is 29532178.

It can be written as a sum of positive squares in only one way, i.e., 87123556 + 36 = 9334^2 + 6^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5445217 + ... + 5445232.

Almost surely, 2^87123592 is an apocalyptic number.

It is an amenable number.

87123592 is a deficient number, since it is larger than the sum of its proper divisors (76233158).

87123592 is a wasteful number, since it uses less digits than its factorization.

87123592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10890455 (or 10890451 counting only the distinct ones).

The product of its digits is 30240, while the sum is 37.

The square root of 87123592 is about 9334.0019284335. The cubic root of 87123592 is about 443.3144874245.

The spelling of 87123592 in words is "eighty-seven million, one hundred twenty-three thousand, five hundred ninety-two".