770828 has 12 divisors (see below), whose sum is σ = 1362312. Its totient is φ = 381600.

The previous prime is 770813. The next prime is 770837. The reversal of 770828 is 828077.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 770794 and 770803.

It is a congruent number.

It is an unprimeable number.

770828 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473 + ... + 1328.

It is an arithmetic number, because the mean of its divisors is an integer number (113526).

2⁷⁷⁰⁸²⁸ is an apocalyptic number.

It is an amenable number.

770828 is a deficient number, since it is larger than the sum of its proper divisors (591484).

770828 is a wasteful number, since it uses less digits than its factorization.

770828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1912 (or 1910 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 32.

The square root of 770828 is about 877.9681087602. The cubic root of 770828 is about 91.6894062961.

The spelling of 770828 in words is "seven hundred seventy thousand, eight hundred twenty-eight".