772500880 has 40 divisors (see below), whose sum is σ = 1803101112. Its totient is φ = 307789824.

The previous prime is 772500863. The next prime is 772500887. The reversal of 772500880 is 88005277.

It can be written as a sum of positive squares in 4 ways, for example, as 512388496 + 260112384 = 22636^2 + 16128^2 .

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

It is not an unprimeable number, because it can be changed into a prime (772500887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1774 + ... + 39346.

Almost surely, 2^772500880 is an apocalyptic number.

It is an amenable number.

772500880 is an abundant number, since it is smaller than the sum of its proper divisors (1030600232).

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

772500880 is a wasteful number, since it uses less digits than its factorization.

772500880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37843 (or 37837 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 37.

The square root of 772500880 is about 27793.9000501909. The cubic root of 772500880 is about 917.5568763975.

The spelling of 772500880 in words is "seven hundred seventy-two million, five hundred thousand, eight hundred eighty".