72304780 has 24 divisors (see below), whose sum is σ = 152813808. Its totient is φ = 28736448.

The previous prime is 72304777. The next prime is 72304811. The reversal of 72304780 is 8740327.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8374 + ... + 14653.

It is an arithmetic number, because the mean of its divisors is an integer number (6367242).

Almost surely, 2^72304780 is an apocalyptic number.

It is an amenable number.

72304780 is an abundant number, since it is smaller than the sum of its proper divisors (80509028).

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

72304780 is a wasteful number, since it uses less digits than its factorization.

72304780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23193 (or 23191 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 72304780 is about 8503.2217423751. The cubic root of 72304780 is about 416.6029456334.

The spelling of 72304780 in words is "seventy-two million, three hundred four thousand, seven hundred eighty".