13809712 has 40 divisors (see below), whose sum is σ = 32381856. Its totient is φ = 5569536.

The previous prime is 13809709. The next prime is 13809749. The reversal of 13809712 is 21790831.

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, 1723 + ... + 5530.

Almost surely, 2^13809712 is an apocalyptic number.

It is an amenable number.

13809712 is an abundant number, since it is smaller than the sum of its proper divisors (18572144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13809712 is a wasteful number, since it uses less digits than its factorization.

13809712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7285 (or 7279 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 13809712 is about 3716.1420855506. The cubic root of 13809712 is about 239.9172863116.

The spelling of 13809712 in words is "thirteen million, eight hundred nine thousand, seven hundred twelve".