776231920 has 20 divisors (see below), whose sum is σ = 1804739400. Its totient is φ = 310492736.

The previous prime is 776231891. The next prime is 776231941. The reversal of 776231920 is 29132677.

776231920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 776231920.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4851370 + ... + 4851529.

It is an arithmetic number, because the mean of its divisors is an integer number (90236970).

Almost surely, 2^776231920 is an apocalyptic number.

It is an amenable number.

776231920 is an abundant number, since it is smaller than the sum of its proper divisors (1028507480).

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

776231920 is a wasteful number, since it uses less digits than its factorization.

776231920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9702912 (or 9702906 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 776231920 is about 27860.9389647944. The cubic root of 776231920 is about 919.0317159750.

The spelling of 776231920 in words is "seven hundred seventy-six million, two hundred thirty-one thousand, nine hundred twenty".