72404480 has 40 divisors (see below), whose sum is σ = 173607192. Its totient is φ = 28960768.

The previous prime is 72404477. The next prime is 72404489. The reversal of 72404480 is 8440427.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72404489) 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, 11582 + ... + 16701.

Almost surely, 2^72404480 is an apocalyptic number.

It is an amenable number.

72404480 is an abundant number, since it is smaller than the sum of its proper divisors (101202712).

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

72404480 is an equidigital number, since it uses as much as digits as its factorization.

72404480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28306 (or 28290 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 29.

The square root of 72404480 is about 8509.0822066778. The cubic root of 72404480 is about 416.7943402525.

The spelling of 72404480 in words is "seventy-two million, four hundred four thousand, four hundred eighty".