16872972 has 12 divisors (see below), whose sum is σ = 39370296. Its totient is φ = 5624320.

The previous prime is 16872967. The next prime is 16872979. The reversal of 16872972 is 27927861.

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

It is a super-2 number, since 2×16872972² = 569394368225568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16872979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 703029 + ... + 703052.

It is an arithmetic number, because the mean of its divisors is an integer number (3280858).

Almost surely, 2^16872972 is an apocalyptic number.

16872972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16872972 is an abundant number, since it is smaller than the sum of its proper divisors (22497324).

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

16872972 is a wasteful number, since it uses less digits than its factorization.

16872972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1406088 (or 1406086 counting only the distinct ones).

The product of its digits is 84672, while the sum is 42.

The square root of 16872972 is about 4107.6723335729. The cubic root of 16872972 is about 256.4861165344.

The spelling of 16872972 in words is "sixteen million, eight hundred seventy-two thousand, nine hundred seventy-two".