204328089 has 30 divisors (see below), whose sum is σ = 355071354. Its totient is φ = 116756640.

The previous prime is 204328087. The next prime is 204328093. The reversal of 204328089 is 980823402.

204328089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 150921225 + 53406864 = 12285^2 + 7308^2 .

It is not a de Polignac number, because 204328089 - 2¹ = 204328087 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204328087) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 21772 + ... + 29709.

Almost surely, 2^204328089 is an apocalyptic number.

It is an amenable number.

204328089 is a deficient number, since it is larger than the sum of its proper divisors (150743265).

204328089 is an equidigital number, since it uses as much as digits as its factorization.

204328089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51507 (or 51491 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 204328089 is about 14294.3376551696. The cubic root of 204328089 is about 588.9919481048.

The spelling of 204328089 in words is "two hundred four million, three hundred twenty-eight thousand, eighty-nine".