15139924 has 12 divisors (see below), whose sum is σ = 26704384. Its totient is φ = 7510104.

The previous prime is 15139921. The next prime is 15139937. The reversal of 15139924 is 42993151.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 15139924.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15139921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14394 + ... + 15409.

Almost surely, 2^15139924 is an apocalyptic number.

It is an amenable number.

15139924 is a deficient number, since it is larger than the sum of its proper divisors (11564460).

15139924 is a wasteful number, since it uses less digits than its factorization.

15139924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29934 (or 29932 counting only the distinct ones).

The product of its digits is 9720, while the sum is 34.

The square root of 15139924 is about 3891.0055255679. The cubic root of 15139924 is about 247.3856847180.

The spelling of 15139924 in words is "fifteen million, one hundred thirty-nine thousand, nine hundred twenty-four".