243228 has 12 divisors (see below), whose sum is σ = 567560. Its totient is φ = 81072.

The previous prime is 243227. The next prime is 243233. The reversal of 243228 is 822342.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243227) 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, 10123 + ... + 10146.

2²⁴³²²⁸ is an apocalyptic number.

It is an amenable number.

243228 is an abundant number, since it is smaller than the sum of its proper divisors (324332).

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

243228 is a wasteful number, since it uses less digits than its factorization.

243228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20276 (or 20274 counting only the distinct ones).

The product of its digits is 768, while the sum is 21.

The square root of 243228 is about 493.1815081692. The cubic root of 243228 is about 62.4220254266.

The spelling of 243228 in words is "two hundred forty-three thousand, two hundred twenty-eight".