73920432 has 20 divisors (see below), whose sum is σ = 190961240. Its totient is φ = 24640128.

The previous prime is 73920401. The next prime is 73920433. The reversal of 73920432 is 23402937.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 73920432.

It is not an unprimeable number, because it can be changed into a prime (73920433) 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, 769957 + ... + 770052.

It is an arithmetic number, because the mean of its divisors is an integer number (9548062).

Almost surely, 2^73920432 is an apocalyptic number.

It is an amenable number.

73920432 is an abundant number, since it is smaller than the sum of its proper divisors (117040808).

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

73920432 is a wasteful number, since it uses less digits than its factorization.

73920432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540020 (or 1540014 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 73920432 is about 8597.6992271188. The cubic root of 73920432 is about 419.6831169862.

The spelling of 73920432 in words is "seventy-three million, nine hundred twenty thousand, four hundred thirty-two".