204834 has 16 divisors (see below), whose sum is σ = 468288. Its totient is φ = 58512.

The previous prime is 204821. The next prime is 204857. The reversal of 204834 is 438402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 204834.

It is an unprimeable number.

204834 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2397 + ... + 2480.

It is an arithmetic number, because the mean of its divisors is an integer number (29268).

2²⁰⁴⁸³⁴ is an apocalyptic number.

204834 is an abundant number, since it is smaller than the sum of its proper divisors (263454).

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

204834 is a wasteful number, since it uses less digits than its factorization.

204834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4889.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 204834 is about 452.5859034482. The cubic root of 204834 is about 58.9477657006.

The spelling of 204834 in words is "two hundred four thousand, eight hundred thirty-four".