15279972 has 12 divisors (see below), whose sum is σ = 35653296. Its totient is φ = 5093320.

The previous prime is 15279961. The next prime is 15279989. The reversal of 15279972 is 27997251.

15279972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

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, 636654 + ... + 636677.

It is an arithmetic number, because the mean of its divisors is an integer number (2971108).

Almost surely, 2^15279972 is an apocalyptic number.

15279972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15279972 is an abundant number, since it is smaller than the sum of its proper divisors (20373324).

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

15279972 is a wasteful number, since it uses less digits than its factorization.

15279972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1273338 (or 1273336 counting only the distinct ones).

The product of its digits is 79380, while the sum is 42.

The square root of 15279972 is about 3908.9604756252. The cubic root of 15279972 is about 248.1461374214.

The spelling of 15279972 in words is "fifteen million, two hundred seventy-nine thousand, nine hundred seventy-two".