13215964 has 12 divisors (see below), whose sum is σ = 23666104. Its totient is φ = 6454224.

The previous prime is 13215949. The next prime is 13215991. The reversal of 13215964 is 46951231.

13215964 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 38247 + ... + 38590.

Almost surely, 2^13215964 is an apocalyptic number.

It is an amenable number.

13215964 is a deficient number, since it is larger than the sum of its proper divisors (10450140).

13215964 is a wasteful number, since it uses less digits than its factorization.

13215964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76884 (or 76882 counting only the distinct ones).

The product of its digits is 6480, while the sum is 31.

The square root of 13215964 is about 3635.3767342602. The cubic root of 13215964 is about 236.4283850048.

The spelling of 13215964 in words is "thirteen million, two hundred fifteen thousand, nine hundred sixty-four".