813285284 has 12 divisors (see below), whose sum is σ = 1626570624. Its totient is φ = 348550824.

The previous prime is 813285269. The next prime is 813285289. The reversal of 813285284 is 482582318.

813285284 is an admirable number.

It is a super-2 number, since 2×813285284² = 1322865906341921312, which contains 22 as substring.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (813285289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14522924 + ... + 14522979.

It is an arithmetic number, because the mean of its divisors is an integer number (135547552).

Almost surely, 2^813285284 is an apocalyptic number.

It is an amenable number.

813285284 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

813285284 is a wasteful number, since it uses less digits than its factorization.

813285284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29045914 (or 29045912 counting only the distinct ones).

The product of its digits is 122880, while the sum is 41.

The square root of 813285284 is about 28518.1570933327. The cubic root of 813285284 is about 933.4283161272.

The spelling of 813285284 in words is "eight hundred thirteen million, two hundred eighty-five thousand, two hundred eighty-four".