219228 has 12 divisors (see below), whose sum is σ = 511560. Its totient is φ = 73072.

The previous prime is 219223. The next prime is 219251. The reversal of 219228 is 822912.

219228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 219198 and 219207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219223) by changing a digit.

219228 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 in 3 ways as a sum of consecutive naturals, for example, 9123 + ... + 9146.

It is an arithmetic number, because the mean of its divisors is an integer number (42630).

2²¹⁹²²⁸ is an apocalyptic number.

It is an amenable number.

219228 is an abundant number, since it is smaller than the sum of its proper divisors (292332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

219228 is a wasteful number, since it uses less digits than its factorization.

219228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18276 (or 18274 counting only the distinct ones).

The product of its digits is 576, while the sum is 24.

The square root of 219228 is about 468.2178979919. The cubic root of 219228 is about 60.2974122192.

The spelling of 219228 in words is "two hundred nineteen thousand, two hundred twenty-eight".