15381656 has 16 divisors (see below), whose sum is σ = 28915440. Its totient is φ = 7670880.

The previous prime is 15381631. The next prime is 15381679. The reversal of 15381656 is 65618351.

15381656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

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, 1085 + ... + 5651.

It is an arithmetic number, because the mean of its divisors is an integer number (1807215).

Almost surely, 2^15381656 is an apocalyptic number.

It is an amenable number.

15381656 is a deficient number, since it is larger than the sum of its proper divisors (13533784).

15381656 is a wasteful number, since it uses less digits than its factorization.

15381656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4994 (or 4990 counting only the distinct ones).

The product of its digits is 21600, while the sum is 35.

The square root of 15381656 is about 3921.9454356225. The cubic root of 15381656 is about 248.6953689274.

The spelling of 15381656 in words is "fifteen million, three hundred eighty-one thousand, six hundred fifty-six".