97172272 has 80 divisors (see below), whose sum is σ = 209986560. Its totient is φ = 43352064.

The previous prime is 97172269. The next prime is 97172347. The reversal of 97172272 is 27227179.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 765073 + ... + 765199.

It is an arithmetic number, because the mean of its divisors is an integer number (2624832).

Almost surely, 2^97172272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97172272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104993280).

97172272 is an abundant number, since it is smaller than the sum of its proper divisors (112814288).

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

97172272 is a wasteful number, since it uses less digits than its factorization.

97172272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278 (or 272 counting only the distinct ones).

The product of its digits is 24696, while the sum is 37.

The square root of 97172272 is about 9857.5997078396. The cubic root of 97172272 is about 459.7419346445.

The spelling of 97172272 in words is "ninety-seven million, one hundred seventy-two thousand, two hundred seventy-two".