222726 has 16 divisors (see below), whose sum is σ = 509184. Its totient is φ = 63624.

The previous prime is 222713. The next prime is 222731. The reversal of 222726 is 627222.

222726 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nude number because it is divisible by every one of its digits.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 222726.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2610 + ... + 2693.

It is an arithmetic number, because the mean of its divisors is an integer number (31824).

2²²²⁷²⁶ is an apocalyptic number.

222726 is an abundant number, since it is smaller than the sum of its proper divisors (286458).

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

222726 is a wasteful number, since it uses less digits than its factorization.

222726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5315.

The product of its digits is 672, while the sum is 21.

The square root of 222726 is about 471.9385553226. The cubic root of 222726 is about 60.6164231321.

Adding to 222726 its reverse (627222), we get a palindrome (849948).

Subtracting 222726 from its reverse (627222), we obtain a square (404496 = 636²).

The spelling of 222726 in words is "two hundred twenty-two thousand, seven hundred twenty-six".