72131160 has 32 divisors (see below), whose sum is σ = 216393840. Its totient is φ = 19234944.

The previous prime is 72131159. The next prime is 72131231. The reversal of 72131160 is 6113127.

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, 300427 + ... + 300666.

Almost surely, 2^72131160 is an apocalyptic number.

It is an amenable number.

72131160 is an abundant number, since it is smaller than the sum of its proper divisors (144262680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72131160 is a wasteful number, since it uses less digits than its factorization.

72131160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601107 (or 601103 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 72131160 is about 8493.0065347908. The cubic root of 72131160 is about 416.2692259965.

Adding to 72131160 its reverse (6113127), we get a palindrome (78244287).

The spelling of 72131160 in words is "seventy-two million, one hundred thirty-one thousand, one hundred sixty".