72739180 has 24 divisors (see below), whose sum is σ = 153199872. Its totient is φ = 29010432.

The previous prime is 72739157. The next prime is 72739211. The reversal of 72739180 is 8193727.

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, 1909 + ... + 12211.

It is an arithmetic number, because the mean of its divisors is an integer number (6383328).

Almost surely, 2^72739180 is an apocalyptic number.

It is an amenable number.

72739180 is an abundant number, since it is smaller than the sum of its proper divisors (80460692).

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

72739180 is a wasteful number, since it uses less digits than its factorization.

72739180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10665 (or 10663 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 72739180 is about 8528.7267513973. The cubic root of 72739180 is about 417.4355835453.

The spelling of 72739180 in words is "seventy-two million, seven hundred thirty-nine thousand, one hundred eighty".