813732912 has 80 divisors (see below), whose sum is σ = 2458672000. Its totient is φ = 256965696.

The previous prime is 813732911. The next prime is 813733057. The reversal of 813732912 is 219237318.

It is a super-2 number, since 2×813732912² = 1324322504143999488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (813732911) 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, 41362 + ... + 57777.

It is an arithmetic number, because the mean of its divisors is an integer number (30733400).

Almost surely, 2^813732912 is an apocalyptic number.

It is an amenable number.

813732912 is an abundant number, since it is smaller than the sum of its proper divisors (1644939088).

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

813732912 is a wasteful number, since it uses less digits than its factorization.

813732912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99175 (or 99163 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 813732912 is about 28526.0041365769. The cubic root of 813732912 is about 933.5995360853.

The spelling of 813732912 in words is "eight hundred thirteen million, seven hundred thirty-two thousand, nine hundred twelve".