72804007280 has 40 divisors (see below), whose sum is σ = 169283584800. Its totient is φ = 29119148288.

The previous prime is 72804007279. The next prime is 72804007313. The reversal of 72804007280 is 8270040827.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1142501 + ... + 1204539.

It is an arithmetic number, because the mean of its divisors is an integer number (4232089620).

Almost surely, 2^72804007280 is an apocalyptic number.

It is an amenable number.

72804007280 is an abundant number, since it is smaller than the sum of its proper divisors (96479577520).

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

72804007280 is a wasteful number, since it uses less digits than its factorization.

72804007280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76721 (or 76715 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 38.

The spelling of 72804007280 in words is "seventy-two billion, eight hundred four million, seven thousand, two hundred eighty".