15139492 has 6 divisors (see below), whose sum is σ = 26494118. Its totient is φ = 7569744.

The previous prime is 15139489. The next prime is 15139493. The reversal of 15139492 is 29493151.

It can be written as a sum of positive squares in only one way, i.e., 14318656 + 820836 = 3784^2 + 906^2 .

It is not an unprimeable number, because it can be changed into a prime (15139493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1892433 + ... + 1892440.

Almost surely, 2^15139492 is an apocalyptic number.

It is an amenable number.

15139492 is a deficient number, since it is larger than the sum of its proper divisors (11354626).

15139492 is a wasteful number, since it uses less digits than its factorization.

15139492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3784877 (or 3784875 counting only the distinct ones).

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

The square root of 15139492 is about 3890.9500125291. The cubic root of 15139492 is about 247.3833317420.

The spelling of 15139492 in words is "fifteen million, one hundred thirty-nine thousand, four hundred ninety-two".