204790434 has 16 divisors (see below), whose sum is σ = 410069088. Its totient is φ = 68182112.

The previous prime is 204790409. The next prime is 204790447. The reversal of 204790434 is 434097402.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 204790395 and 204790404.

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 7 ways as a sum of consecutive naturals, for example, 14772 + ... + 25055.

It is an arithmetic number, because the mean of its divisors is an integer number (25629318).

Almost surely, 2^204790434 is an apocalyptic number.

204790434 is an abundant number, since it is smaller than the sum of its proper divisors (205278654).

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

204790434 is a wasteful number, since it uses less digits than its factorization.

204790434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40689.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 204790434 is about 14310.5008298103. The cubic root of 204790434 is about 589.4358621799.

The spelling of 204790434 in words is "two hundred four million, seven hundred ninety thousand, four hundred thirty-four".