204855844 has 12 divisors (see below), whose sum is σ = 367241868. Its totient is φ = 99929600.

The previous prime is 204855829. The next prime is 204855851. The reversal of 204855844 is 448558402.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10810944 + 194044900 = 3288^2 + 13930^2 .

It is a junction number, because it is equal to n+sod(n) for n = 204855797 and 204855806.

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 3 ways as a sum of consecutive naturals, for example, 624397 + ... + 624724.

It is an arithmetic number, because the mean of its divisors is an integer number (30603489).

Almost surely, 2^204855844 is an apocalyptic number.

It is an amenable number.

204855844 is a deficient number, since it is larger than the sum of its proper divisors (162386024).

204855844 is a wasteful number, since it uses less digits than its factorization.

204855844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249166 (or 1249164 counting only the distinct ones).

The product of its (nonzero) digits is 204800, while the sum is 40.

The square root of 204855844 is about 14312.7860320764. The cubic root of 204855844 is about 589.4986107092.

The spelling of 204855844 in words is "two hundred four million, eight hundred fifty-five thousand, eight hundred forty-four".