72713572 has 12 divisors (see below), whose sum is σ = 128178540. Its totient is φ = 36091136.

The previous prime is 72713567. The next prime is 72713581. The reversal of 72713572 is 27531727.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18455616 + 54257956 = 4296^2 + 7366^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65797 + ... + 66892.

It is an arithmetic number, because the mean of its divisors is an integer number (10681545).

Almost surely, 2^72713572 is an apocalyptic number.

It is an amenable number.

72713572 is a deficient number, since it is larger than the sum of its proper divisors (55464968).

72713572 is a wasteful number, since it uses less digits than its factorization.

72713572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132830 (or 132828 counting only the distinct ones).

The product of its digits is 20580, while the sum is 34.

The square root of 72713572 is about 8527.2253400505. The cubic root of 72713572 is about 417.3865914015.

The spelling of 72713572 in words is "seventy-two million, seven hundred thirteen thousand, five hundred seventy-two".