204320256 has 160 divisors (see below), whose sum is σ = 643196928. Its totient is φ = 56401920.

The previous prime is 204320251. The next prime is 204320257. The reversal of 204320256 is 652023402.

204320256 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204320251) 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 15 ways as a sum of consecutive naturals, for example, 333006 + ... + 333618.

Almost surely, 2^204320256 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 204320256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321598464).

204320256 is an abundant number, since it is smaller than the sum of its proper divisors (438876672).

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

204320256 is an equidigital number, since it uses as much as digits as its factorization.

204320256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672 (or 656 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 204320256 is about 14294.0636629336. The cubic root of 204320256 is about 588.9844215938.

Adding to 204320256 its reverse (652023402), we get a palindrome (856343658).

The spelling of 204320256 in words is "two hundred four million, three hundred twenty thousand, two hundred fifty-six".