228256 has 24 divisors (see below), whose sum is σ = 514080. Its totient is φ = 97728.

The previous prime is 228251. The next prime is 228257. The reversal of 228256 is 652822.

It is a self number, because there is not a number n which added to its sum of digits gives 228256.

It is not an unprimeable number, because it can be changed into a prime (228251) by changing a digit.

228256 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, 286 + ... + 733.

It is an arithmetic number, because the mean of its divisors is an integer number (21420).

2²²⁸²⁵⁶ is an apocalyptic number.

It is an amenable number.

228256 is an abundant number, since it is smaller than the sum of its proper divisors (285824).

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

228256 is a wasteful number, since it uses less digits than its factorization.

228256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036 (or 1028 counting only the distinct ones).

The product of its digits is 1920, while the sum is 25.

The square root of 228256 is about 477.7614467493. The cubic root of 228256 is about 61.1140034138.

It can be divided in two parts, 228 and 256, that added together give a palindrome (484).

The spelling of 228256 in words is "two hundred twenty-eight thousand, two hundred fifty-six".