72542572 has 12 divisors (see below), whose sum is σ = 131327280. Its totient is φ = 35020496.

The previous prime is 72542567. The next prime is 72542599. The reversal of 72542572 is 27524527.

It is a happy number.

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, 312568 + ... + 312799.

It is an arithmetic number, because the mean of its divisors is an integer number (10943940).

Almost surely, 2^72542572 is an apocalyptic number.

It is an amenable number.

72542572 is a deficient number, since it is larger than the sum of its proper divisors (58784708).

72542572 is a wasteful number, since it uses less digits than its factorization.

72542572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625400 (or 625398 counting only the distinct ones).

The product of its digits is 39200, while the sum is 34.

The square root of 72542572 is about 8517.1927300021. The cubic root of 72542572 is about 417.0591462052.

The spelling of 72542572 in words is "seventy-two million, five hundred forty-two thousand, five hundred seventy-two".