15864960 has 64 divisors (see below), whose sum is σ = 50575680. Its totient is φ = 4230144.

The previous prime is 15864931. The next prime is 15864973. The reversal of 15864960 is 6946851.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2212 + ... + 6051.

It is an arithmetic number, because the mean of its divisors is an integer number (790245).

Almost surely, 2^15864960 is an apocalyptic number.

15864960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15864960 is an abundant number, since it is smaller than the sum of its proper divisors (34710720).

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

15864960 is an equidigital number, since it uses as much as digits as its factorization.

15864960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8285 (or 8273 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 15864960 is about 3983.0842320995. The cubic root of 15864960 is about 251.2732905812.

The spelling of 15864960 in words is "fifteen million, eight hundred sixty-four thousand, nine hundred sixty".