15996172 has 12 divisors (see below), whose sum is σ = 28644616. Its totient is φ = 7812000.

The previous prime is 15996161. The next prime is 15996199. The reversal of 15996172 is 27169951.

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, 46329 + ... + 46672.

Almost surely, 2^15996172 is an apocalyptic number.

It is an amenable number.

15996172 is a deficient number, since it is larger than the sum of its proper divisors (12648444).

15996172 is a wasteful number, since it uses less digits than its factorization.

15996172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93048 (or 93046 counting only the distinct ones).

The product of its digits is 34020, while the sum is 40.

The square root of 15996172 is about 3999.5214713763. The cubic root of 15996172 is about 251.9641126354.

The spelling of 15996172 in words is "fifteen million, nine hundred ninety-six thousand, one hundred seventy-two".