204630355 has 4 divisors (see below), whose sum is σ = 245556432. Its totient is φ = 163704280.

The previous prime is 204630347. The next prime is 204630383. The reversal of 204630355 is 553036402.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 204630355 - 2³ = 204630347 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20463031 + ... + 20463040.

It is an arithmetic number, because the mean of its divisors is an integer number (61389108).

Almost surely, 2^204630355 is an apocalyptic number.

204630355 is a deficient number, since it is larger than the sum of its proper divisors (40926077).

204630355 is an equidigital number, since it uses as much as digits as its factorization.

204630355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40926076.

The product of its (nonzero) digits is 10800, while the sum is 28.

The square root of 204630355 is about 14304.9066756830. The cubic root of 204630355 is about 589.2822402594.

Adding to 204630355 its reverse (553036402), we get a palindrome (757666757).

The spelling of 204630355 in words is "two hundred four million, six hundred thirty thousand, three hundred fifty-five".