812326512 has 80 divisors (see below), whose sum is σ = 2194859520. Its totient is φ = 258398976.

The previous prime is 812326507. The next prime is 812326519. The reversal of 812326512 is 215623218.

It is a super-2 number, since 2×812326512² = 1319748724196172288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 812326512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812326519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 925818 + ... + 926694.

It is an arithmetic number, because the mean of its divisors is an integer number (27435744).

Almost surely, 2^812326512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 812326512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1097429760).

812326512 is an abundant number, since it is smaller than the sum of its proper divisors (1382533008).

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

812326512 is a wasteful number, since it uses less digits than its factorization.

812326512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1750 (or 1744 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 812326512 is about 28501.3422841802. The cubic root of 812326512 is about 933.0613695130.

The spelling of 812326512 in words is "eight hundred twelve million, three hundred twenty-six thousand, five hundred twelve".