72734872 has 32 divisors (see below), whose sum is σ = 156143520. Its totient is φ = 31115520.

The previous prime is 72734867. The next prime is 72734873. The reversal of 72734872 is 27843727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72734873) 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, 48372 + ... + 49852.

It is an arithmetic number, because the mean of its divisors is an integer number (4879485).

Almost surely, 2^72734872 is an apocalyptic number.

It is an amenable number.

72734872 is an abundant number, since it is smaller than the sum of its proper divisors (83408648).

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

72734872 is a wasteful number, since it uses less digits than its factorization.

72734872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2371 (or 2367 counting only the distinct ones).

The product of its digits is 131712, while the sum is 40.

The square root of 72734872 is about 8528.4741894433. The cubic root of 72734872 is about 417.4273424663.

The spelling of 72734872 in words is "seventy-two million, seven hundred thirty-four thousand, eight hundred seventy-two".