72732432 has 20 divisors (see below), whose sum is σ = 187892240. Its totient is φ = 24244128.

The previous prime is 72732403. The next prime is 72732433. The reversal of 72732432 is 23423727.

It is a self number, because there is not a number n which added to its sum of digits gives 72732432.

It is not an unprimeable number, because it can be changed into a prime (72732433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 757582 + ... + 757677.

It is an arithmetic number, because the mean of its divisors is an integer number (9394612).

Almost surely, 2^72732432 is an apocalyptic number.

It is an amenable number.

72732432 is an abundant number, since it is smaller than the sum of its proper divisors (115159808).

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

72732432 is a wasteful number, since it uses less digits than its factorization.

72732432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1515270 (or 1515264 counting only the distinct ones).

The product of its digits is 14112, while the sum is 30.

The square root of 72732432 is about 8528.3311380363. The cubic root of 72732432 is about 417.4226746727.

The spelling of 72732432 in words is "seventy-two million, seven hundred thirty-two thousand, four hundred thirty-two".