810220828 has 12 divisors (see below), whose sum is σ = 1418480280. Its totient is φ = 404940752.

The previous prime is 810220813. The next prime is 810220891. The reversal of 810220828 is 828022018.

810220828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 810220828.

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, 31351 + ... + 51022.

It is an arithmetic number, because the mean of its divisors is an integer number (118206690).

Almost surely, 2^810220828 is an apocalyptic number.

It is an amenable number.

810220828 is a deficient number, since it is larger than the sum of its proper divisors (608259452).

810220828 is a wasteful number, since it uses less digits than its factorization.

810220828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84836 (or 84834 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 31.

The square root of 810220828 is about 28464.3782296399. The cubic root of 810220828 is about 932.2544556866.

The spelling of 810220828 in words is "eight hundred ten million, two hundred twenty thousand, eight hundred twenty-eight".