204091228 has 24 divisors (see below), whose sum is σ = 402200064. Its totient is φ = 89775600.

The previous prime is 204091219. The next prime is 204091231. The reversal of 204091228 is 822190402.

204091228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 204091196 and 204091205.

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, 73450 + ... + 76177.

It is an arithmetic number, because the mean of its divisors is an integer number (16758336).

Almost surely, 2^204091228 is an apocalyptic number.

It is an amenable number.

204091228 is a deficient number, since it is larger than the sum of its proper divisors (198108836).

204091228 is a wasteful number, since it uses less digits than its factorization.

204091228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149673 (or 149671 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 204091228 is about 14286.0501189097. The cubic root of 204091228 is about 588.7642698897.

The spelling of 204091228 in words is "two hundred four million, ninety-one thousand, two hundred twenty-eight".