15312864 has 48 divisors (see below), whose sum is σ = 45940608. Its totient is φ = 4374912.

The previous prime is 15312839. The next prime is 15312883. The reversal of 15312864 is 46821351.

It is a tau number, because it is divible by the number of its divisors (48).

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 7 ways as a sum of consecutive naturals, for example, 10722 + ... + 12065.

It is an arithmetic number, because the mean of its divisors is an integer number (957096).

Almost surely, 2^15312864 is an apocalyptic number.

15312864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

15312864 is an abundant number, since it is smaller than the sum of its proper divisors (30627744).

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

15312864 is a wasteful number, since it uses less digits than its factorization.

15312864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22807 (or 22799 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 15312864 is about 3913.1654705622. The cubic root of 15312864 is about 248.3240647362.

The spelling of 15312864 in words is "fifteen million, three hundred twelve thousand, eight hundred sixty-four".