72481156 has 12 divisors (see below), whose sum is σ = 138373200. Its totient is φ = 32945960.

The previous prime is 72481141. The next prime is 72481177. The reversal of 72481156 is 65118427.

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, 823606 + ... + 823693.

It is an arithmetic number, because the mean of its divisors is an integer number (11531100).

Almost surely, 2^72481156 is an apocalyptic number.

It is an amenable number.

72481156 is a deficient number, since it is larger than the sum of its proper divisors (65892044).

72481156 is a wasteful number, since it uses less digits than its factorization.

72481156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1647314 (or 1647312 counting only the distinct ones).

The product of its digits is 13440, while the sum is 34.

The square root of 72481156 is about 8513.5865532688. The cubic root of 72481156 is about 416.9414160886.

The spelling of 72481156 in words is "seventy-two million, four hundred eighty-one thousand, one hundred fifty-six".