13688432 has 10 divisors (see below), whose sum is σ = 26521368. Its totient is φ = 6844208.

The previous prime is 13688431. The next prime is 13688471. The reversal of 13688432 is 23488631.

It is a happy number.

13688432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 13688392 and 13688401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13688431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427748 + ... + 427779.

Almost surely, 2^13688432 is an apocalyptic number.

It is an amenable number.

13688432 is a deficient number, since it is larger than the sum of its proper divisors (12832936).

13688432 is an equidigital number, since it uses as much as digits as its factorization.

13688432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855535 (or 855529 counting only the distinct ones).

The product of its digits is 27648, while the sum is 35.

The square root of 13688432 is about 3699.7881020404. The cubic root of 13688432 is about 239.2128843222.

The spelling of 13688432 in words is "thirteen million, six hundred eighty-eight thousand, four hundred thirty-two".