72544832 has 14 divisors (see below), whose sum is σ = 143956278. Its totient is φ = 36272384.

The previous prime is 72544817. The next prime is 72544837. The reversal of 72544832 is 23844527.

It can be written as a sum of positive squares in only one way, i.e., 67634176 + 4910656 = 8224^2 + 2216^2 .

It is a junction number, because it is equal to n+sod(n) for n = 72544792 and 72544801.

It is not an unprimeable number, because it can be changed into a prime (72544837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 566693 + ... + 566820.

Almost surely, 2^72544832 is an apocalyptic number.

It is an amenable number.

72544832 is a deficient number, since it is larger than the sum of its proper divisors (71411446).

72544832 is a wasteful number, since it uses less digits than its factorization.

72544832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133525 (or 1133515 counting only the distinct ones).

The product of its digits is 53760, while the sum is 35.

The square root of 72544832 is about 8517.3254017913. The cubic root of 72544832 is about 417.0634771972.

The spelling of 72544832 in words is "seventy-two million, five hundred forty-four thousand, eight hundred thirty-two".