7224920 has 16 divisors (see below), whose sum is σ = 16256160. Its totient is φ = 2889952.

The previous prime is 7224911. The next prime is 7224923. The reversal of 7224920 is 294227.

It is a self number, because there is not a number n which added to its sum of digits gives 7224920.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7224923) by changing a digit.

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, 90272 + ... + 90351.

It is an arithmetic number, because the mean of its divisors is an integer number (1016010).

Almost surely, 2^7224920 is an apocalyptic number.

It is an amenable number.

7224920 is an abundant number, since it is smaller than the sum of its proper divisors (9031240).

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

7224920 is a wasteful number, since it uses less digits than its factorization.

7224920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180634 (or 180630 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 7224920 is about 2687.9211297953. The cubic root of 7224920 is about 193.3203981305.

The spelling of 7224920 in words is "seven million, two hundred twenty-four thousand, nine hundred twenty".