13686928 has 20 divisors (see below), whose sum is σ = 26592048. Its totient is φ = 6824480.

The previous prime is 13686919. The next prime is 13686931. The reversal of 13686928 is 82968631.

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, 6123 + ... + 8053.

Almost surely, 2^13686928 is an apocalyptic number.

It is an amenable number.

13686928 is a deficient number, since it is larger than the sum of its proper divisors (12905120).

13686928 is a wasteful number, since it uses less digits than its factorization.

13686928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2382 (or 2376 counting only the distinct ones).

The product of its digits is 124416, while the sum is 43.

The square root of 13686928 is about 3699.5848415734. The cubic root of 13686928 is about 239.2041229253.

The spelling of 13686928 in words is "thirteen million, six hundred eighty-six thousand, nine hundred twenty-eight".