810085824 has 84 divisors (see below), whose sum is σ = 2444206440. Its totient is φ = 255813120.

The previous prime is 810085823. The next prime is 810085847. The reversal of 810085824 is 428580018.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (810085823) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26067 + ... + 47954.

Almost surely, 2^810085824 is an apocalyptic number.

It is an amenable number.

810085824 is an abundant number, since it is smaller than the sum of its proper divisors (1634120616).

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

810085824 is a wasteful number, since it uses less digits than its factorization.

810085824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74058 (or 74045 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 810085824 is about 28462.0066755666. The cubic root of 810085824 is about 932.2026734781.

The spelling of 810085824 in words is "eight hundred ten million, eighty-five thousand, eight hundred twenty-four".