810895204 has 72 divisors (see below), whose sum is σ = 1696478784. Its totient is φ = 332035200.

The previous prime is 810895201. The next prime is 810895229. The reversal of 810895204 is 402598018.

It is not an unprimeable number, because it can be changed into a prime (810895201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4479994 + ... + 4480174.

Almost surely, 2^810895204 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 810895204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (848239392).

810895204 is an abundant number, since it is smaller than the sum of its proper divisors (885583580).

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

810895204 is a wasteful number, since it uses less digits than its factorization.

810895204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357 (or 294 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 810895204 is about 28476.2217297169. The cubic root of 810895204 is about 932.5130336210.

The spelling of 810895204 in words is "eight hundred ten million, eight hundred ninety-five thousand, two hundred four".