222756 has 24 divisors (see below), whose sum is σ = 547680. Its totient is φ = 70272.

The previous prime is 222731. The next prime is 222773. The reversal of 222756 is 657222.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 222756.

It is an unprimeable number.

222756 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 7 ways as a sum of consecutive naturals, for example, 261 + ... + 716.

It is an arithmetic number, because the mean of its divisors is an integer number (22820).

2²²²⁷⁵⁶ is an apocalyptic number.

222756 is the 299-th centered pentagonal number.

It is an amenable number.

222756 is an abundant number, since it is smaller than the sum of its proper divisors (324924).

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

222756 is a wasteful number, since it uses less digits than its factorization.

222756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003 (or 1001 counting only the distinct ones).

The product of its digits is 1680, while the sum is 24.

The square root of 222756 is about 471.9703380510. The cubic root of 222756 is about 60.6191445792.

Adding to 222756 its reverse (657222), we get a palindrome (879978).

The spelling of 222756 in words is "two hundred twenty-two thousand, seven hundred fifty-six".