772399980 has 72 divisors (see below), whose sum is σ = 2555948304. Its totient is φ = 187248000.

The previous prime is 772399967. The next prime is 772399997. The reversal of 772399980 is 89993277.

772399980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 193071 + ... + 197030.

It is an arithmetic number, because the mean of its divisors is an integer number (35499282).

Almost surely, 2^772399980 is an apocalyptic number.

It is an amenable number.

772399980 is an abundant number, since it is smaller than the sum of its proper divisors (1783548324).

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

772399980 is a wasteful number, since it uses less digits than its factorization.

772399980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390127 (or 390122 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 54.

The square root of 772399980 is about 27792.0848444301. The cubic root of 772399980 is about 917.5169258411.

The spelling of 772399980 in words is "seven hundred seventy-two million, three hundred ninety-nine thousand, nine hundred eighty".