776820828 has 48 divisors (see below), whose sum is σ = 2073012480. Its totient is φ = 221789184.

The previous prime is 776820817. The next prime is 776820853. The reversal of 776820828 is 828028677.

776820828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163900 + ... + 168572.

It is an arithmetic number, because the mean of its divisors is an integer number (43187760).

Almost surely, 2^776820828 is an apocalyptic number.

It is an amenable number.

776820828 is an abundant number, since it is smaller than the sum of its proper divisors (1296191652).

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

776820828 is a wasteful number, since it uses less digits than its factorization.

776820828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6666 (or 6664 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 48.

The square root of 776820828 is about 27871.5056643878. The cubic root of 776820828 is about 919.2640727841.

The spelling of 776820828 in words is "seven hundred seventy-six million, eight hundred twenty thousand, eight hundred twenty-eight".