7272724 has 24 divisors (see below), whose sum is σ = 13305600. Its totient is φ = 3474240.

The previous prime is 7272721. The next prime is 7272737. The reversal of 7272724 is 4272727.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7272721) 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 7 ways as a sum of consecutive naturals, for example, 10707 + ... + 11365.

It is an arithmetic number, because the mean of its divisors is an integer number (554400).

Almost surely, 2^7272724 is an apocalyptic number.

It is an amenable number.

7272724 is a deficient number, since it is larger than the sum of its proper divisors (6032876).

7272724 is a wasteful number, since it uses less digits than its factorization.

7272724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783 (or 781 counting only the distinct ones).

The product of its digits is 10976, while the sum is 31.

The square root of 7272724 is about 2696.7988430730. The cubic root of 7272724 is about 193.7458321684.

The spelling of 7272724 in words is "seven million, two hundred seventy-two thousand, seven hundred twenty-four".