204855826 has 48 divisors (see below), whose sum is σ = 369248256. Its totient is φ = 83486592.

The previous prime is 204855821. The next prime is 204855829. The reversal of 204855826 is 628558402.

It is a super-2 number, since 2×204855826² = 83931818892284552, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (204855821) 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 23 ways as a sum of consecutive naturals, for example, 1495230 + ... + 1495366.

It is an arithmetic number, because the mean of its divisors is an integer number (7692672).

Almost surely, 2^204855826 is an apocalyptic number.

204855826 is a deficient number, since it is larger than the sum of its proper divisors (164392430).

204855826 is a wasteful number, since it uses less digits than its factorization.

204855826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331 (or 302 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 40.

The square root of 204855826 is about 14312.7854032679. The cubic root of 204855826 is about 589.4985934434.

The spelling of 204855826 in words is "two hundred four million, eight hundred fifty-five thousand, eight hundred twenty-six".