15492972 has 24 divisors (see below), whose sum is σ = 39436992. Its totient is φ = 4694800.

The previous prime is 15492959. The next prime is 15492979. The reversal of 15492972 is 27929451.

It is a nialpdrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 15492972.

It is not an unprimeable number, because it can be changed into a prime (15492979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58554 + ... + 58817.

It is an arithmetic number, because the mean of its divisors is an integer number (1643208).

Almost surely, 2^15492972 is an apocalyptic number.

15492972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15492972 is an abundant number, since it is smaller than the sum of its proper divisors (23944020).

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

15492972 is a wasteful number, since it uses less digits than its factorization.

15492972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117389 (or 117387 counting only the distinct ones).

The product of its digits is 45360, while the sum is 39.

The square root of 15492972 is about 3936.1112789148. Note that the first 3 decimals coincide. The cubic root of 15492972 is about 249.2938579985.

The spelling of 15492972 in words is "fifteen million, four hundred ninety-two thousand, nine hundred seventy-two".