812910228 has 48 divisors (see below), whose sum is σ = 2061480960. Its totient is φ = 247826304.

The previous prime is 812910191. The next prime is 812910253. The reversal of 812910228 is 822019218.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6900 + ... + 40907.

It is an arithmetic number, because the mean of its divisors is an integer number (42947520).

Almost surely, 2^812910228 is an apocalyptic number.

It is an amenable number.

812910228 is an abundant number, since it is smaller than the sum of its proper divisors (1248570732).

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

812910228 is a wasteful number, since it uses less digits than its factorization.

812910228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47936 (or 47934 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 812910228 is about 28511.5805945584. The cubic root of 812910228 is about 933.2848069442.

The spelling of 812910228 in words is "eight hundred twelve million, nine hundred ten thousand, two hundred twenty-eight".