228756 has 24 divisors (see below), whose sum is σ = 582624. Its totient is φ = 69280.

The previous prime is 228751. The next prime is 228757. The reversal of 228756 is 657822.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228751) by changing a digit.

228756 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 735 + ... + 998.

It is an arithmetic number, because the mean of its divisors is an integer number (24276).

2²²⁸⁷⁵⁶ is an apocalyptic number.

It is an amenable number.

228756 is an abundant number, since it is smaller than the sum of its proper divisors (353868).

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

228756 is a wasteful number, since it uses less digits than its factorization.

228756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1751 (or 1749 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 228756 is about 478.2844342021. The cubic root of 228756 is about 61.1585947453.

It can be divided in two parts, 22 and 8756, that added together give a palindrome (8778).

The spelling of 228756 in words is "two hundred twenty-eight thousand, seven hundred fifty-six".