7218232 has 32 divisors (see below), whose sum is σ = 15585120. Its totient is φ = 3070080.

The previous prime is 7218227. The next prime is 7218247. The reversal of 7218232 is 2328127.

It is a junction number, because it is equal to n+sod(n) for n = 7218197 and 7218206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8382 + ... + 9202.

It is an arithmetic number, because the mean of its divisors is an integer number (487035).

Almost surely, 2^7218232 is an apocalyptic number.

It is an amenable number.

7218232 is an abundant number, since it is smaller than the sum of its proper divisors (8366888).

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

7218232 is a wasteful number, since it uses less digits than its factorization.

7218232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991 (or 987 counting only the distinct ones).

The product of its digits is 1344, while the sum is 25.

The square root of 7218232 is about 2686.6767576320. The cubic root of 7218232 is about 193.2607284513.

The spelling of 7218232 in words is "seven million, two hundred eighteen thousand, two hundred thirty-two".