7216518 has 32 divisors (see below), whose sum is σ = 14990976. Its totient is φ = 2314368.

The previous prime is 7216513. The next prime is 7216537. The reversal of 7216518 is 8156127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7216513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21246 + ... + 21582.

It is an arithmetic number, because the mean of its divisors is an integer number (468468).

Almost surely, 2^7216518 is an apocalyptic number.

7216518 is an abundant number, since it is smaller than the sum of its proper divisors (7774458).

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

7216518 is a wasteful number, since it uses less digits than its factorization.

7216518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468.

The product of its digits is 3360, while the sum is 30.

The square root of 7216518 is about 2686.3577572617. The cubic root of 7216518 is about 193.2454303787.

The spelling of 7216518 in words is "seven million, two hundred sixteen thousand, five hundred eighteen".