222736 has 10 divisors (see below), whose sum is σ = 431582. Its totient is φ = 111360.

The previous prime is 222731. The next prime is 222773. The reversal of 222736 is 637222.

It can be written as a sum of positive squares in only one way, i.e., 197136 + 25600 = 444^2 + 160^2 .

It is a super-2 number, since 2×222736² = 99222651392, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6945 + ... + 6976.

2²²²⁷³⁶ is an apocalyptic number.

It is an amenable number.

222736 is a deficient number, since it is larger than the sum of its proper divisors (208846).

222736 is a wasteful number, since it uses less digits than its factorization.

222736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13929 (or 13923 counting only the distinct ones).

The product of its digits is 1008, while the sum is 22.

The square root of 222736 is about 471.9491498032. The cubic root of 222736 is about 60.6173303083.

Adding to 222736 its reverse (637222), we get a palindrome (859958).

The spelling of 222736 in words is "two hundred twenty-two thousand, seven hundred thirty-six".