205228 has 6 divisors (see below), whose sum is σ = 359156. Its totient is φ = 102612.

The previous prime is 205223. The next prime is 205237. The reversal of 205228 is 822502.

It is not an unprimeable number, because it can be changed into a prime (205223) by changing a digit.

205228 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25650 + ... + 25657.

2²⁰⁵²²⁸ is an apocalyptic number.

It is an amenable number.

205228 is a deficient number, since it is larger than the sum of its proper divisors (153928).

205228 is a wasteful number, since it uses less digits than its factorization.

205228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51311 (or 51309 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 205228 is about 453.0209708170. The cubic root of 205228 is about 58.9855370084.

Subtracting from 205228 its sum of digits (19), we obtain a square (205209 = 453²).

It can be divided in two parts, 2052 and 28, that added together give a triangular number (2080 = T₆₄).

The spelling of 205228 in words is "two hundred five thousand, two hundred twenty-eight".