209228 has 12 divisors (see below), whose sum is σ = 385560. Its totient is φ = 99072.

The previous prime is 209227. The next prime is 209233. The reversal of 209228 is 822902.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 209228.

It is not an unprimeable number, because it can be changed into a prime (209221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1301 + ... + 1452.

It is an arithmetic number, because the mean of its divisors is an integer number (32130).

2²⁰⁹²²⁸ is an apocalyptic number.

It is an amenable number.

209228 is a deficient number, since it is larger than the sum of its proper divisors (176332).

209228 is a wasteful number, since it uses less digits than its factorization.

209228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2776 (or 2774 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 209228 is about 457.4144728799. The cubic root of 209228 is about 59.3662934602.

The spelling of 209228 in words is "two hundred nine thousand, two hundred twenty-eight".