72604420 has 48 divisors (see below), whose sum is σ = 176238720. Its totient is φ = 24609024.

The previous prime is 72604417. The next prime is 72604439. The reversal of 72604420 is 2440627.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9547 + ... + 15373.

It is an arithmetic number, because the mean of its divisors is an integer number (3671640).

Almost surely, 2^72604420 is an apocalyptic number.

72604420 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72604420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88119360).

72604420 is an abundant number, since it is smaller than the sum of its proper divisors (103634300).

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

72604420 is a wasteful number, since it uses less digits than its factorization.

72604420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5932 (or 5930 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 72604420 is about 8520.8227302298. The cubic root of 72604420 is about 417.1776373033.

The spelling of 72604420 in words is "seventy-two million, six hundred four thousand, four hundred twenty".