8372172 has 12 divisors (see below), whose sum is σ = 19535096. Its totient is φ = 2790720.

The previous prime is 8372153. The next prime is 8372173. The reversal of 8372172 is 2712738.

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

It is not an unprimeable number, because it can be changed into a prime (8372173) 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, 348829 + ... + 348852.

Almost surely, 2^8372172 is an apocalyptic number.

It is an amenable number.

8372172 is an abundant number, since it is smaller than the sum of its proper divisors (11162924).

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

8372172 is a wasteful number, since it uses less digits than its factorization.

8372172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697688 (or 697686 counting only the distinct ones).

The product of its digits is 4704, while the sum is 30.

The square root of 8372172 is about 2893.4705804622. The cubic root of 8372172 is about 203.0545446221.

The spelling of 8372172 in words is "eight million, three hundred seventy-two thousand, one hundred seventy-two".