97972172 has 12 divisors (see below), whose sum is σ = 171553536. Its totient is φ = 48956880.

The previous prime is 97972169. The next prime is 97972187. The reversal of 97972172 is 27127979.

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, 1397 + ... + 14067.

It is an arithmetic number, because the mean of its divisors is an integer number (14296128).

Almost surely, 2^97972172 is an apocalyptic number.

It is an amenable number.

97972172 is a deficient number, since it is larger than the sum of its proper divisors (73581364).

97972172 is a wasteful number, since it uses less digits than its factorization.

97972172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14608 (or 14606 counting only the distinct ones).

The product of its digits is 111132, while the sum is 44.

The square root of 97972172 is about 9898.0893105690. The cubic root of 97972172 is about 460.9999858837. Note that the first 4 decimals are identical.

The spelling of 97972172 in words is "ninety-seven million, nine hundred seventy-two thousand, one hundred seventy-two".