204864834 has 16 divisors (see below), whose sum is σ = 409884480. Its totient is φ = 68262480.

The previous prime is 204864827. The next prime is 204864839. The reversal of 204864834 is 438468402.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 204864792 and 204864801.

It is not an unprimeable number, because it can be changed into a prime (204864839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17724 + ... + 26904.

It is an arithmetic number, because the mean of its divisors is an integer number (25617780).

Almost surely, 2^204864834 is an apocalyptic number.

204864834 is an abundant number, since it is smaller than the sum of its proper divisors (205019646).

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

204864834 is a wasteful number, since it uses less digits than its factorization.

204864834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12905.

The product of its (nonzero) digits is 147456, while the sum is 39.

The square root of 204864834 is about 14313.1000834899. The cubic root of 204864834 is about 589.5072338705.

The spelling of 204864834 in words is "two hundred four million, eight hundred sixty-four thousand, eight hundred thirty-four".