15317072 has 10 divisors (see below), whose sum is σ = 29676858. Its totient is φ = 7658528.

The previous prime is 15317063. The next prime is 15317087. The reversal of 15317072 is 27071351.

It can be written as a sum of positive squares in only one way, i.e., 14714896 + 602176 = 3836^2 + 776^2 .

It is a super-2 number, since 2×15317072² = 469225389306368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 478643 + ... + 478674.

Almost surely, 2^15317072 is an apocalyptic number.

It is an amenable number.

15317072 is a deficient number, since it is larger than the sum of its proper divisors (14359786).

15317072 is an equidigital number, since it uses as much as digits as its factorization.

15317072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957325 (or 957319 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 15317072 is about 3913.7031057555. The cubic root of 15317072 is about 248.3468092723.

The spelling of 15317072 in words is "fifteen million, three hundred seventeen thousand, seventy-two".