13287928 has 32 divisors (see below), whose sum is σ = 26192160. Its totient is φ = 6307840.

The previous prime is 13287917. The next prime is 13287941. The reversal of 13287928 is 82978231.

13287928 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 7 ways as a sum of consecutive naturals, for example, 47148 + ... + 47428.

It is an arithmetic number, because the mean of its divisors is an integer number (818505).

Almost surely, 2^13287928 is an apocalyptic number.

It is an amenable number.

13287928 is a deficient number, since it is larger than the sum of its proper divisors (12904232).

13287928 is a wasteful number, since it uses less digits than its factorization.

13287928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567 (or 563 counting only the distinct ones).

The product of its digits is 48384, while the sum is 40.

The square root of 13287928 is about 3645.2610331772. The cubic root of 13287928 is about 236.8567442994.

The spelling of 13287928 in words is "thirteen million, two hundred eighty-seven thousand, nine hundred twenty-eight".