204630356 has 48 divisors (see below), whose sum is σ = 434138880. Its totient is φ = 82494720.

The previous prime is 204630347. The next prime is 204630383. The reversal of 204630356 is 653036402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36680 + ... + 41888.

It is an arithmetic number, because the mean of its divisors is an integer number (9044560).

Almost surely, 2^204630356 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 204630356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217069440).

204630356 is an abundant number, since it is smaller than the sum of its proper divisors (229508524).

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

204630356 is a wasteful number, since it uses less digits than its factorization.

204630356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5304 (or 5302 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 204630356 is about 14304.9067106360. The cubic root of 204630356 is about 589.2822412193.

Adding to 204630356 its reverse (653036402), we get a palindrome (857666758).

The spelling of 204630356 in words is "two hundred four million, six hundred thirty thousand, three hundred fifty-six".