812646328 has 16 divisors (see below), whose sum is σ = 1640920680. Its totient is φ = 375067488.

The previous prime is 812646319. The next prime is 812646337. The reversal of 812646328 is 823646218.

It is an interprime number because it is at equal distance from previous prime (812646319) and next prime (812646337).

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, 3906850 + ... + 3907057.

Almost surely, 2^812646328 is an apocalyptic number.

It is an amenable number.

812646328 is an abundant number, since it is smaller than the sum of its proper divisors (828274352).

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

812646328 is a wasteful number, since it uses less digits than its factorization.

812646328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7813926 (or 7813922 counting only the distinct ones).

The product of its digits is 110592, while the sum is 40.

The square root of 812646328 is about 28506.9522748399. The cubic root of 812646328 is about 933.1838033692.

The spelling of 812646328 in words is "eight hundred twelve million, six hundred forty-six thousand, three hundred twenty-eight".