205505228 has 24 divisors (see below), whose sum is σ = 366300480. Its totient is φ = 100863360.

The previous prime is 205505227. The next prime is 205505233. The reversal of 205505228 is 822505502.

It is a self number, because there is not a number n which added to its sum of digits gives 205505228.

It is not an unprimeable number, because it can be changed into a prime (205505227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55400 + ... + 58992.

It is an arithmetic number, because the mean of its divisors is an integer number (15262520).

Almost surely, 2^205505228 is an apocalyptic number.

It is an amenable number.

205505228 is a deficient number, since it is larger than the sum of its proper divisors (160795252).

205505228 is a wasteful number, since it uses less digits than its factorization.

205505228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3857 (or 3855 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 205505228 is about 14335.4535331115. The cubic root of 205505228 is about 590.1208485574.

The spelling of 205505228 in words is "two hundred five million, five hundred five thousand, two hundred twenty-eight".