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22366 = 253211
BaseRepresentation
bin101011101011110
31010200101
411131132
51203431
6251314
7122131
oct53536
933611
1022366
1115893
1210b3a
13a246
148218
156961
hex575e

22366 has 8 divisors (see below), whose sum is σ = 34344. Its totient is φ = 10920.

The previous prime is 22349. The next prime is 22367. The reversal of 22366 is 66322.

Adding to 22366 its reverse (66322), we get a palindrome (88688).

Subtracting 22366 from its reverse (66322), we obtain a triangular number (43956 = T296).

It can be divided in two parts, 223 and 66, that added together give a square (289 = 172).

22366 is a nontrivial binomial coefficient, being equal to C(212, 2).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1 + ... + 211.

It is an arithmetic number, because the mean of its divisors is an integer number (4293).

222366 is an apocalyptic number.

22366 is the 211-st triangular number and also the 106-th hexagonal number.

22366 is the 71-st centered nonagonal number.

22366 is a deficient number, since it is larger than the sum of its proper divisors (11978).

22366 is a wasteful number, since it uses less digits than its factorization.

22366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266.

The product of its digits is 432, while the sum is 19.

The square root of 22366 is about 149.5526663086. The cubic root of 22366 is about 28.1749253158.

The spelling of 22366 in words is "twenty-two thousand, three hundred sixty-six".

Divisors: 1 2 53 106 211 422 11183 22366