7118224 has 45 divisors (see below), whose sum is σ = 14931553. Its totient is φ = 3286976.

The previous prime is 7118219. The next prime is 7118231. The reversal of 7118224 is 4228117.

It is a happy number.

The square root of 7118224 is 2668.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3732624 + 3385600 = 1932^2 + 1840^2 .

It is a super-2 number, since 2×7118224² = 101338225828352, which contains 22 as substring.

It is a Duffinian number.

Its product of digits (896) is a multiple of the sum of its prime factors (112).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 245442 + ... + 245470.

Almost surely, 2^7118224 is an apocalyptic number.

7118224 is the 2668-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7118224

7118224 is an abundant number, since it is smaller than the sum of its proper divisors (7813329).

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

7118224 is a wasteful number, since it uses less digits than its factorization.

7118224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112 (or 54 counting only the distinct ones).

The product of its digits is 896, while the sum is 25.

The cubic root of 7118224 is about 192.3640373481.

Multiplying 7118224 by its sum of digits (25), we get a square (177955600 = 13340²).

The spelling of 7118224 in words is "seven million, one hundred eighteen thousand, two hundred twenty-four".