204520256 has 56 divisors (see below), whose sum is σ = 432816000. Its totient is φ = 95606784.

The previous prime is 204520241. The next prime is 204520271. The reversal of 204520256 is 652025402.

204520256 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (204520241) and next prime (204520271).

It is a super-2 number, since 2×204520256² = 83657070228611072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 95000 + ... + 97128.

Almost surely, 2^204520256 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 204520256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216408000).

204520256 is an abundant number, since it is smaller than the sum of its proper divisors (228295744).

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

204520256 is a wasteful number, since it uses less digits than its factorization.

204520256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2239 (or 2229 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 204520256 is about 14301.0578629694. The cubic root of 204520256 is about 589.1765357974.

Adding to 204520256 its reverse (652025402), we get a palindrome (856545658).

The spelling of 204520256 in words is "two hundred four million, five hundred twenty thousand, two hundred fifty-six".