22168 has 16 divisors (see below), whose sum is σ = 44280. Its totient is φ = 10368.
The previous prime is 22159. The next prime is 22171. The reversal of 22168 is 86122.
It is a happy number.
It is a congruent number.
It is an unprimeable number.
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 in 3 ways as a sum of consecutive naturals, for example, 55 + ... + 217.
222168 is an apocalyptic number.
It is an amenable number.
22168 is a deficient number, since it is larger than the sum of its proper divisors (22112).
22168 is a wasteful number, since it uses less digits than its factorization.
22168 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 186 (or 182 counting only the distinct ones).
The product of its digits is 192, while the sum is 19.
The square root of 22168 is about 148.8892205635. The cubic root of 22168 is about 28.0915371568.
It can be divided in two parts, 221 and 68, that added together give a square (289 = 172).
The spelling of 22168 in words is "twenty-two thousand, one hundred sixty-eight".
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