13889656 has 16 divisors (see below), whose sum is σ = 28410840. Its totient is φ = 6313440.

The previous prime is 13889647. The next prime is 13889669. The reversal of 13889656 is 65698831.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78831 + ... + 79006.

Almost surely, 2^13889656 is an apocalyptic number.

It is an amenable number.

13889656 is an abundant number, since it is smaller than the sum of its proper divisors (14521184).

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

13889656 is a wasteful number, since it uses less digits than its factorization.

13889656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157854 (or 157850 counting only the distinct ones).

The product of its digits is 311040, while the sum is 46.

The square root of 13889656 is about 3726.8828798340. The cubic root of 13889656 is about 240.3793537658.

The spelling of 13889656 in words is "thirteen million, eight hundred eighty-nine thousand, six hundred fifty-six".