13115904 has 40 divisors (see below), whose sum is σ = 34945680. Its totient is φ = 4371456.

The previous prime is 13115899. The next prime is 13115923. The reversal of 13115904 is 40951131.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2734 + ... + 5805.

It is an arithmetic number, because the mean of its divisors is an integer number (873642).

Almost surely, 2^13115904 is an apocalyptic number.

It is an amenable number.

13115904 is an abundant number, since it is smaller than the sum of its proper divisors (21829776).

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

13115904 is an frugal number, since it uses more digits than its factorization.

13115904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8560 (or 8544 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 13115904 is about 3621.5886017051. The cubic root of 13115904 is about 235.8301948109.

The spelling of 13115904 in words is "thirteen million, one hundred fifteen thousand, nine hundred four".