204309234 has 24 divisors (see below), whose sum is σ = 457935660. Its totient is φ = 65754528.

The previous prime is 204309233. The next prime is 204309239. The reversal of 204309234 is 432903402.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 199233225 + 5076009 = 14115^2 + 2253^2 .

It is a junction number, because it is equal to n+sod(n) for n = 204309198 and 204309207.

It is not an unprimeable number, because it can be changed into a prime (204309233) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 195177 + ... + 196220.

Almost surely, 2^204309234 is an apocalyptic number.

204309234 is an abundant number, since it is smaller than the sum of its proper divisors (253626426).

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

204309234 is a wasteful number, since it uses less digits than its factorization.

204309234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391434 (or 391431 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 204309234 is about 14293.6781130680. The cubic root of 204309234 is about 588.9738305358.

The spelling of 204309234 in words is "two hundred four million, three hundred nine thousand, two hundred thirty-four".