228668 has 12 divisors (see below), whose sum is σ = 436632. Its totient is φ = 103920.

The previous prime is 228647. The next prime is 228677. The reversal of 228668 is 866822.

It is a happy number.

228668 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

228668 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, 2555 + ... + 2642.

It is an arithmetic number, because the mean of its divisors is an integer number (36386).

2²²⁸⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

228668 is a deficient number, since it is larger than the sum of its proper divisors (207964).

228668 is a wasteful number, since it uses less digits than its factorization.

228668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5212 (or 5210 counting only the distinct ones).

The product of its digits is 9216, while the sum is 32.

The square root of 228668 is about 478.1924298857. The cubic root of 228668 is about 61.1507513858.

The spelling of 228668 in words is "two hundred twenty-eight thousand, six hundred sixty-eight".