72489188 has 12 divisors (see below), whose sum is σ = 127005312. Its totient is φ = 36201960.

The previous prime is 72489149. The next prime is 72489223. The reversal of 72489188 is 88198427.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6668 + ... + 13763.

It is an arithmetic number, because the mean of its divisors is an integer number (10583776).

Almost surely, 2^72489188 is an apocalyptic number.

It is an amenable number.

72489188 is a deficient number, since it is larger than the sum of its proper divisors (54516124).

72489188 is a wasteful number, since it uses less digits than its factorization.

72489188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21322 (or 21320 counting only the distinct ones).

The product of its digits is 258048, while the sum is 47.

The square root of 72489188 is about 8514.0582567892. The cubic root of 72489188 is about 416.9568166421.

The spelling of 72489188 in words is "seventy-two million, four hundred eighty-nine thousand, one hundred eighty-eight".