228368 has 20 divisors (see below), whose sum is σ = 505920. Its totient is φ = 97824.

The previous prime is 228359. The next prime is 228383. The reversal of 228368 is 863822.

228368 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 228368.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 908 + ... + 1131.

It is an arithmetic number, because the mean of its divisors is an integer number (25296).

2²²⁸³⁶⁸ is an apocalyptic number.

228368 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

228368 is an abundant number, since it is smaller than the sum of its proper divisors (277552).

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

228368 is a wasteful number, since it uses less digits than its factorization.

228368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2054 (or 2048 counting only the distinct ones).

The product of its digits is 4608, while the sum is 29.

The square root of 228368 is about 477.8786456832. The cubic root of 228368 is about 61.1239975273.

The spelling of 228368 in words is "two hundred twenty-eight thousand, three hundred sixty-eight".