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18366 = 233061
BaseRepresentation
bin100011110111110
3221012020
410132332
51041431
6221010
7104355
oct43676
927166
1018366
1112887
12a766
13848a
14699c
155696
hex47be

18366 has 8 divisors (see below), whose sum is σ = 36744. Its totient is φ = 6120.

The previous prime is 18353. The next prime is 18367. The reversal of 18366 is 66381.

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

18366 is an admirable number.

It is a plaindrome in base 14 and base 16.

It is a nialpdrome in base 12.

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 18366.

It is not an unprimeable number, because it can be changed into a prime (18367) by changing a digit.

18366 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 3 ways as a sum of consecutive naturals, for example, 1525 + ... + 1536.

It is an arithmetic number, because the mean of its divisors is an integer number (4593).

218366 is an apocalyptic number.

18366 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18372).

18366 is a wasteful number, since it uses less digits than its factorization.

18366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3066.

The product of its digits is 864, while the sum is 24.

The square root of 18366 is about 135.5212160512. The cubic root of 18366 is about 26.3838514648.

The spelling of 18366 in words is "eighteen thousand, three hundred sixty-six".

Divisors: 1 2 3 6 3061 6122 9183 18366