16972972 has 6 divisors (see below), whose sum is σ = 29702708. Its totient is φ = 8486484.

The previous prime is 16972961. The next prime is 16972979. The reversal of 16972972 is 27927961.

It is a super-4 number, since 4×16972972⁴ (a number of 30 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (16972979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2121618 + ... + 2121625.

Almost surely, 2^16972972 is an apocalyptic number.

It is an amenable number.

16972972 is a deficient number, since it is larger than the sum of its proper divisors (12729736).

16972972 is a wasteful number, since it uses less digits than its factorization.

16972972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4243247 (or 4243245 counting only the distinct ones).

The product of its digits is 95256, while the sum is 43.

The square root of 16972972 is about 4119.8266953842. The cubic root of 16972972 is about 256.9918189445.

The spelling of 16972972 in words is "sixteen million, nine hundred seventy-two thousand, nine hundred seventy-two".