86831904 has 24 divisors (see below), whose sum is σ = 227934000. Its totient is φ = 28943936.

The previous prime is 86831873. The next prime is 86831911. The reversal of 86831904 is 40913868.

It is a tau number, because it is divible by the number of its divisors (24).

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, 452154 + ... + 452345.

It is an arithmetic number, because the mean of its divisors is an integer number (9497250).

Almost surely, 2^86831904 is an apocalyptic number.

It is an amenable number.

86831904 is an abundant number, since it is smaller than the sum of its proper divisors (141102096).

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

86831904 is a wasteful number, since it uses less digits than its factorization.

86831904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904512 (or 904504 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 86831904 is about 9318.3638048748. The cubic root of 86831904 is about 442.8191983346.

The spelling of 86831904 in words is "eighty-six million, eight hundred thirty-one thousand, nine hundred four".