204344355 has 16 divisors (see below), whose sum is σ = 327365280. Its totient is φ = 108845568.

The previous prime is 204344333. The next prime is 204344359. The reversal of 204344355 is 553443402.

204344355 = 21² + 22² + ... + 849².

It is not a de Polignac number, because 204344355 - 2⁷ = 204344227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204344359) 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, 4219 + ... + 20651.

It is an arithmetic number, because the mean of its divisors is an integer number (20460330).

Almost surely, 2^204344355 is an apocalyptic number.

204344355 is a deficient number, since it is larger than the sum of its proper divisors (123020925).

204344355 is a wasteful number, since it uses less digits than its factorization.

204344355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17270.

The product of its (nonzero) digits is 28800, while the sum is 30.

The square root of 204344355 is about 14294.9066103980. The cubic root of 204344355 is about 589.0075770358.

Adding to 204344355 its reverse (553443402), we get a palindrome (757787757).

The spelling of 204344355 in words is "two hundred four million, three hundred forty-four thousand, three hundred fifty-five".