7225224 has 16 divisors (see below), whose sum is σ = 18063120. Its totient is φ = 2408400.

The previous prime is 7225217. The next prime is 7225241. The reversal of 7225224 is 4225227.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 301051 = 7225224 / (7 + 2 + 2 + 5 + 2 + 2 + 4).

It is a d-powerful number, because it can be written as 7⁵ + 2¹⁰ + 2¹⁹ + 5⁸ + 2²¹ + 2²² + 4⁵ .

It is a junction number, because it is equal to n+sod(n) for n = 7225194 and 7225203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150502 + ... + 150549.

It is an arithmetic number, because the mean of its divisors is an integer number (1128945).

Almost surely, 2^7225224 is an apocalyptic number.

It is an amenable number.

7225224 is an abundant number, since it is smaller than the sum of its proper divisors (10837896).

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

7225224 is a wasteful number, since it uses less digits than its factorization.

7225224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301060 (or 301056 counting only the distinct ones).

The product of its digits is 2240, while the sum is 24.

The square root of 7225224 is about 2687.9776784787. The cubic root of 7225224 is about 193.3231095135.

The spelling of 7225224 in words is "seven million, two hundred twenty-five thousand, two hundred twenty-four".