812133328 has 40 divisors (see below), whose sum is σ = 1587944000. Its totient is φ = 402361344.

The previous prime is 812133263. The next prime is 812133349. The reversal of 812133328 is 823331218.

It is a self number, because there is not a number n which added to its sum of digits gives 812133328.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1206400 + ... + 1207072.

It is an arithmetic number, because the mean of its divisors is an integer number (39698600).

Almost surely, 2^812133328 is an apocalyptic number.

It is an amenable number.

812133328 is a deficient number, since it is larger than the sum of its proper divisors (775810672).

812133328 is a wasteful number, since it uses less digits than its factorization.

812133328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259 (or 1253 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 812133328 is about 28497.9530492981. The cubic root of 812133328 is about 932.9873981006.

The spelling of 812133328 in words is "eight hundred twelve million, one hundred thirty-three thousand, three hundred twenty-eight".