776828 has 12 divisors (see below), whose sum is σ = 1464120. Its totient is φ = 358512.

The previous prime is 776819. The next prime is 776837. The reversal of 776828 is 828677.

It is an interprime number because it is at equal distance from previous prime (776819) and next prime (776837).

It is a super-3 number, since 3×776828³ = 1406357933373646656, which contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 776791 and 776800.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 776828.

It is an unprimeable number.

776828 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7418 + ... + 7521.

It is an arithmetic number, because the mean of its divisors is an integer number (122010).

2⁷⁷⁶⁸²⁸ is an apocalyptic number.

It is an amenable number.

776828 is a deficient number, since it is larger than the sum of its proper divisors (687292).

776828 is a wasteful number, since it uses less digits than its factorization.

776828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14956 (or 14954 counting only the distinct ones).

The product of its digits is 37632, while the sum is 38.

The square root of 776828 is about 881.3784658136. The cubic root of 776828 is about 91.9266901811.

The spelling of 776828 in words is "seven hundred seventy-six thousand, eight hundred twenty-eight".