15313972 has 24 divisors (see below), whose sum is σ = 28029960. Its totient is φ = 7311360.

The previous prime is 15313933. The next prime is 15313993. The reversal of 15313972 is 27931351.

15313972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 599076 + 14714896 = 774^2 + 3836^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10572 + ... + 11932.

It is an arithmetic number, because the mean of its divisors is an integer number (1167915).

Almost surely, 2^15313972 is an apocalyptic number.

It is an amenable number.

15313972 is a deficient number, since it is larger than the sum of its proper divisors (12715988).

15313972 is a wasteful number, since it uses less digits than its factorization.

15313972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491 (or 1489 counting only the distinct ones).

The product of its digits is 5670, while the sum is 31.

The square root of 15313972 is about 3913.3070413654. The cubic root of 15313972 is about 248.3300539583.

The spelling of 15313972 in words is "fifteen million, three hundred thirteen thousand, nine hundred seventy-two".