228592809 has 12 divisors (see below), whose sum is σ = 330361200. Its totient is φ = 152316024.

The previous prime is 228592799. The next prime is 228592841. The reversal of 228592809 is 908295822.

It is not a de Polignac number, because 228592809 - 2¹⁹ = 228068521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228592849) 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 11 ways as a sum of consecutive naturals, for example, 15622 + ... + 26480.

It is an arithmetic number, because the mean of its divisors is an integer number (27530100).

Almost surely, 2^228592809 is an apocalyptic number.

It is an amenable number.

228592809 is a deficient number, since it is larger than the sum of its proper divisors (101768391).

228592809 is a wasteful number, since it uses less digits than its factorization.

228592809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13204 (or 13201 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 228592809 is about 15119.2859950462. The cubic root of 228592809 is about 611.4404808638.

The spelling of 228592809 in words is "two hundred twenty-eight million, five hundred ninety-two thousand, eight hundred nine".