813275736 has 96 divisors (see below), whose sum is σ = 2547120240. Its totient is φ = 214486272.

The previous prime is 813275693. The next prime is 813275737. The reversal of 813275736 is 637572318.

It is a super-2 number, since 2×813275736² = 1322834845532683392, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813275737) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11311 + ... + 41886.

Almost surely, 2^813275736 is an apocalyptic number.

It is an amenable number.

813275736 is an abundant number, since it is smaller than the sum of its proper divisors (1733844504).

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

813275736 is a wasteful number, since it uses less digits than its factorization.

813275736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53233 (or 53222 counting only the distinct ones).

The product of its digits is 211680, while the sum is 42.

The square root of 813275736 is about 28517.9896907198. The cubic root of 813275736 is about 933.4246632850.

The spelling of 813275736 in words is "eight hundred thirteen million, two hundred seventy-five thousand, seven hundred thirty-six".