15217372 has 12 divisors (see below), whose sum is σ = 26666640. Its totient is φ = 7598336.

The previous prime is 15217357. The next prime is 15217387. The reversal of 15217372 is 27371251.

15217372 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (15217357) and next prime (15217387).

It is a self number, because there is not a number n which added to its sum of digits gives 15217372.

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, 1404 + ... + 5692.

It is an arithmetic number, because the mean of its divisors is an integer number (2222220).

Almost surely, 2^15217372 is an apocalyptic number.

It is an amenable number.

15217372 is a deficient number, since it is larger than the sum of its proper divisors (11449268).

15217372 is a wasteful number, since it uses less digits than its factorization.

15217372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5180 (or 5178 counting only the distinct ones).

The product of its digits is 2940, while the sum is 28.

The square root of 15217372 is about 3900.9450137114. The cubic root of 15217372 is about 247.8067997551.

The spelling of 15217372 in words is "fifteen million, two hundred seventeen thousand, three hundred seventy-two".