72644552 has 16 divisors (see below), whose sum is σ = 136896000. Its totient is φ = 36138960.

The previous prime is 72644527. The next prime is 72644567. The reversal of 72644552 is 25544627.

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, 21224 + ... + 24407.

It is an arithmetic number, because the mean of its divisors is an integer number (8556000).

Almost surely, 2^72644552 is an apocalyptic number.

It is an amenable number.

72644552 is a deficient number, since it is larger than the sum of its proper divisors (64251448).

72644552 is a wasteful number, since it uses less digits than its factorization.

72644552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45836 (or 45832 counting only the distinct ones).

The product of its digits is 67200, while the sum is 35.

The square root of 72644552 is about 8523.1773418133. The cubic root of 72644552 is about 417.2544879465.

The spelling of 72644552 in words is "seventy-two million, six hundred forty-four thousand, five hundred fifty-two".