204121844 has 24 divisors (see below), whose sum is σ = 361794048. Its totient is φ = 100759680.

The previous prime is 204121811. The next prime is 204121861. The reversal of 204121844 is 448121402.

204121844 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138029 + ... + 139499.

It is an arithmetic number, because the mean of its divisors is an integer number (15074752).

Almost surely, 2^204121844 is an apocalyptic number.

It is an amenable number.

204121844 is a deficient number, since it is larger than the sum of its proper divisors (157672204).

204121844 is a wasteful number, since it uses less digits than its factorization.

204121844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1895 (or 1893 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 26.

The square root of 204121844 is about 14287.1216135371. The cubic root of 204121844 is about 588.7937088581.

The spelling of 204121844 in words is "two hundred four million, one hundred twenty-one thousand, eight hundred forty-four".