72513188 has 24 divisors (see below), whose sum is σ = 139167840. Its totient is φ = 32785920.

The previous prime is 72513187. The next prime is 72513191. The reversal of 72513188 is 88131527.

It is not an unprimeable number, because it can be changed into a prime (72513187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4223 + ... + 12761.

It is an arithmetic number, because the mean of its divisors is an integer number (5798660).

Almost surely, 2^72513188 is an apocalyptic number.

It is an amenable number.

72513188 is a deficient number, since it is larger than the sum of its proper divisors (66654652).

72513188 is a wasteful number, since it uses less digits than its factorization.

72513188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8747 (or 8745 counting only the distinct ones).

The product of its digits is 13440, while the sum is 35.

The square root of 72513188 is about 8515.4675737742. The cubic root of 72513188 is about 417.0028274551.

The spelling of 72513188 in words is "seventy-two million, five hundred thirteen thousand, one hundred eighty-eight".