72332556 has 12 divisors (see below), whose sum is σ = 168775992. Its totient is φ = 24110848.

The previous prime is 72332549. The next prime is 72332573. The reversal of 72332556 is 65523327.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

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, 3013845 + ... + 3013868.

It is an arithmetic number, because the mean of its divisors is an integer number (14064666).

Almost surely, 2^72332556 is an apocalyptic number.

It is an amenable number.

72332556 is an abundant number, since it is smaller than the sum of its proper divisors (96443436).

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

72332556 is a wasteful number, since it uses less digits than its factorization.

72332556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6027720 (or 6027718 counting only the distinct ones).

The product of its digits is 37800, while the sum is 33.

The square root of 72332556 is about 8504.8548488496. The cubic root of 72332556 is about 416.6562850391.

The spelling of 72332556 in words is "seventy-two million, three hundred thirty-two thousand, five hundred fifty-six".