87313904 has 20 divisors (see below), whose sum is σ = 179122464. Its totient is φ = 41088768.

The previous prime is 87313859. The next prime is 87313907. The reversal of 87313904 is 40931378.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87313907) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 160232 + ... + 160775.

Almost surely, 2^87313904 is an apocalyptic number.

It is an amenable number.

87313904 is an abundant number, since it is smaller than the sum of its proper divisors (91808560).

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

87313904 is a wasteful number, since it uses less digits than its factorization.

87313904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321032 (or 321026 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 87313904 is about 9344.1909227070. The cubic root of 87313904 is about 443.6370434176.

The spelling of 87313904 in words is "eighty-seven million, three hundred thirteen thousand, nine hundred four".