72512572 has 24 divisors (see below), whose sum is σ = 139996080. Its totient is φ = 32588160.

The previous prime is 72512551. The next prime is 72512581. The reversal of 72512572 is 27521527.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5343 + ... + 13174.

It is an arithmetic number, because the mean of its divisors is an integer number (5833170).

Almost surely, 2^72512572 is an apocalyptic number.

It is an amenable number.

72512572 is a deficient number, since it is larger than the sum of its proper divisors (67483508).

72512572 is a wasteful number, since it uses less digits than its factorization.

72512572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18621 (or 18619 counting only the distinct ones).

The product of its digits is 9800, while the sum is 31.

The square root of 72512572 is about 8515.4314042214. The cubic root of 72512572 is about 417.0016466378.

The spelling of 72512572 in words is "seventy-two million, five hundred twelve thousand, five hundred seventy-two".