15138804 has 12 divisors (see below), whose sum is σ = 35323904. Its totient is φ = 5046264.

The previous prime is 15138793. The next prime is 15138821. The reversal of 15138804 is 40883151.

It is a tau number, because it is divible by the number of its divisors (12).

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, 630772 + ... + 630795.

Almost surely, 2^15138804 is an apocalyptic number.

It is an amenable number.

15138804 is an abundant number, since it is smaller than the sum of its proper divisors (20185100).

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

15138804 is a wasteful number, since it uses less digits than its factorization.

15138804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1261574 (or 1261572 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 15138804 is about 3890.8616012395. The cubic root of 15138804 is about 247.3795843175.

The spelling of 15138804 in words is "fifteen million, one hundred thirty-eight thousand, eight hundred four".