204720834 has 16 divisors (see below), whose sum is σ = 433526688. Its totient is φ = 64226112.

The previous prime is 204720833. The next prime is 204720847. The reversal of 204720834 is 438027402.

204720834 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (204720833) 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 7 ways as a sum of consecutive naturals, for example, 1003432 + ... + 1003635.

It is an arithmetic number, because the mean of its divisors is an integer number (27095418).

Almost surely, 2^204720834 is an apocalyptic number.

204720834 is an abundant number, since it is smaller than the sum of its proper divisors (228805854).

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

204720834 is a wasteful number, since it uses less digits than its factorization.

204720834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2007089.

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 204720834 is about 14308.0688424399. The cubic root of 204720834 is about 589.3690794634.

The spelling of 204720834 in words is "two hundred four million, seven hundred twenty thousand, eight hundred thirty-four".