72556324 has 9 divisors (see below), whose sum is σ = 127003387. Its totient is φ = 36269644.

The previous prime is 72556321. The next prime is 72556327. The reversal of 72556324 is 42365527.

The square root of 72556324 is 8518.

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

It is an interprime number because it is at equal distance from previous prime (72556321) and next prime (72556327).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72556324.

It is not an unprimeable number, because it can be changed into a prime (72556321) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 14907 + ... + 19165.

Almost surely, 2^72556324 is an apocalyptic number.

72556324 is the 8518-th square number.

It is an amenable number.

72556324 is a deficient number, since it is larger than the sum of its proper divisors (54447063).

72556324 is an frugal number, since it uses more digits than its factorization.

72556324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8522 (or 4261 counting only the distinct ones).

The product of its digits is 50400, while the sum is 34.

The cubic root of 72556324 is about 417.0854987080.

The spelling of 72556324 in words is "seventy-two million, five hundred fifty-six thousand, three hundred twenty-four".