204505056 has 216 divisors, whose sum is σ = 703959984. Its totient is φ = 55157760.

The previous prime is 204505051. The next prime is 204505057. The reversal of 204505056 is 650505402.

204505056 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204505051) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 727636 + ... + 727916.

It is an arithmetic number, because the mean of its divisors is an integer number (3259074).

Almost surely, 2^204505056 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 204505056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (351979992).

204505056 is an abundant number, since it is smaller than the sum of its proper divisors (499454928).

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

204505056 is a wasteful number, since it uses less digits than its factorization.

204505056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342 (or 312 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 204505056 is about 14300.5264238768. The cubic root of 204505056 is about 589.1619395167.

The spelling of 204505056 in words is "two hundred four million, five hundred five thousand, fifty-six".