7172864 has 18 divisors (see below), whose sum is σ = 14318220. Its totient is φ = 3586304.

The previous prime is 7172863. The next prime is 7172881. The reversal of 7172864 is 4682717.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (7172863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13754 + ... + 14265.

Almost surely, 2^7172864 is an apocalyptic number.

It is an amenable number.

7172864 is a deficient number, since it is larger than the sum of its proper divisors (7145356).

7172864 is an equidigital number, since it uses as much as digits as its factorization.

7172864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28035 (or 28021 counting only the distinct ones).

The product of its digits is 18816, while the sum is 35.

The square root of 7172864 is about 2678.2203046053. The cubic root of 7172864 is about 192.8549833712.

The spelling of 7172864 in words is "seven million, one hundred seventy-two thousand, eight hundred sixty-four".