16864972 has 12 divisors (see below), whose sum is σ = 29954680. Its totient is φ = 8306496.

The previous prime is 16864943. The next prime is 16864993. The reversal of 16864972 is 27946861.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

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, 31197 + ... + 31732.

Almost surely, 2^16864972 is an apocalyptic number.

It is an amenable number.

16864972 is a deficient number, since it is larger than the sum of its proper divisors (13089708).

16864972 is a wasteful number, since it uses less digits than its factorization.

16864972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63000 (or 62998 counting only the distinct ones).

The product of its digits is 145152, while the sum is 43.

The square root of 16864972 is about 4106.6984306131. The cubic root of 16864972 is about 256.4455741153.

The spelling of 16864972 in words is "sixteen million, eight hundred sixty-four thousand, nine hundred seventy-two".