13685872 has 20 divisors (see below), whose sum is σ = 27018360. Its totient is φ = 6713408.

The previous prime is 13685869. The next prime is 13685887. The reversal of 13685872 is 27858631.

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, 7222 + ... + 8917.

It is an arithmetic number, because the mean of its divisors is an integer number (1350918).

Almost surely, 2^13685872 is an apocalyptic number.

It is an amenable number.

13685872 is a deficient number, since it is larger than the sum of its proper divisors (13332488).

13685872 is a wasteful number, since it uses less digits than its factorization.

13685872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16200 (or 16194 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 13685872 is about 3699.4421201041. The cubic root of 13685872 is about 239.1979709227.

The spelling of 13685872 in words is "thirteen million, six hundred eighty-five thousand, eight hundred seventy-two".