13688732 has 24 divisors (see below), whose sum is σ = 24995712. Its totient is φ = 6552000.

The previous prime is 13688699. The next prime is 13688761. The reversal of 13688732 is 23788631.

It is a happy number.

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, 11978 + ... + 13070.

It is an arithmetic number, because the mean of its divisors is an integer number (1041488).

Almost surely, 2^13688732 is an apocalyptic number.

It is an amenable number.

13688732 is a deficient number, since it is larger than the sum of its proper divisors (11306980).

13688732 is a wasteful number, since it uses less digits than its factorization.

13688732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229 (or 1227 counting only the distinct ones).

The product of its digits is 48384, while the sum is 38.

The square root of 13688732 is about 3699.8286446807. The cubic root of 13688732 is about 239.2146318645.

The spelling of 13688732 in words is "thirteen million, six hundred eighty-eight thousand, seven hundred thirty-two".