228868 has 12 divisors (see below), whose sum is σ = 414540. Its totient is φ = 110432.

The previous prime is 228859. The next prime is 228869. The reversal of 228868 is 868822.

It is a happy number.

228868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 82944 + 145924 = 288^2 + 382^2 .

It is a super-2 number, since 2×228868² = 104761122848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (228869) 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, 871 + ... + 1102.

It is an arithmetic number, because the mean of its divisors is an integer number (34545).

2²²⁸⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

228868 is a deficient number, since it is larger than the sum of its proper divisors (185672).

228868 is a wasteful number, since it uses less digits than its factorization.

228868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2006 (or 2004 counting only the distinct ones).

The product of its digits is 12288, while the sum is 34.

The square root of 228868 is about 478.4015050144. The cubic root of 228868 is about 61.1685742941.

The spelling of 228868 in words is "two hundred twenty-eight thousand, eight hundred sixty-eight".