204643256 has 16 divisors (see below), whose sum is σ = 396937800. Its totient is φ = 98793184.

The previous prime is 204643253. The next prime is 204643261. The reversal of 204643256 is 652346402.

204643256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204643253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 440810 + ... + 441273.

Almost surely, 2^204643256 is an apocalyptic number.

It is an amenable number.

204643256 is a deficient number, since it is larger than the sum of its proper divisors (192294544).

204643256 is a wasteful number, since it uses less digits than its factorization.

204643256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882118 (or 882114 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 204643256 is about 14305.3575977673. The cubic root of 204643256 is about 589.2946238415.

Adding to 204643256 its reverse (652346402), we get a palindrome (856989658).

The spelling of 204643256 in words is "two hundred four million, six hundred forty-three thousand, two hundred fifty-six".