15572972 has 6 divisors (see below), whose sum is σ = 27252708. Its totient is φ = 7786484.

The previous prime is 15572959. The next prime is 15572993. The reversal of 15572972 is 27927551.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1946618 + ... + 1946625.

It is an arithmetic number, because the mean of its divisors is an integer number (4542118).

Almost surely, 2^15572972 is an apocalyptic number.

It is an amenable number.

15572972 is a deficient number, since it is larger than the sum of its proper divisors (11679736).

15572972 is a wasteful number, since it uses less digits than its factorization.

15572972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3893247 (or 3893245 counting only the distinct ones).

The product of its digits is 44100, while the sum is 38.

The square root of 15572972 is about 3946.2605083801. The cubic root of 15572972 is about 249.7222087758.

The spelling of 15572972 in words is "fifteen million, five hundred seventy-two thousand, nine hundred seventy-two".