809528204 has 12 divisors (see below), whose sum is σ = 1419221664. Its totient is φ = 404036304.

The previous prime is 809528189. The next prime is 809528207. The reversal of 809528204 is 402825908.

It is a pancake number, because a pancake can be divided into 809528204 parts by 40237 straight cuts.

It is not an unprimeable number, because it can be changed into a prime (809528207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179444 + ... + 183899.

It is an arithmetic number, because the mean of its divisors is an integer number (118268472).

Almost surely, 2^809528204 is an apocalyptic number.

It is an amenable number.

809528204 is a deficient number, since it is larger than the sum of its proper divisors (609693460).

809528204 is a wasteful number, since it uses less digits than its factorization.

809528204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363904 (or 363902 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 809528204 is about 28452.2091233704. The cubic root of 809528204 is about 931.9887314668.

The spelling of 809528204 in words is "eight hundred nine million, five hundred twenty-eight thousand, two hundred four".