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12286 = 26143
BaseRepresentation
bin10111111111110
3121212001
42333332
5343121
6132514
750551
oct27776
917761
1012286
11925a
12713a
135791
144698
153991
hex2ffe

12286 has 4 divisors (see below), whose sum is σ = 18432. Its totient is φ = 6142.

The previous prime is 12281. The next prime is 12289. The reversal of 12286 is 68221.

12286 = T89 + T90 + T91.

It is a happy number.

12286 is nontrivially palindromic in base 4.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68221 = 174013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3070 + ... + 3073.

It is an arithmetic number, because the mean of its divisors is an integer number (4608).

212286 is an apocalyptic number.

12286 is the 91-st centered triangular number.

12286 is a deficient number, since it is larger than the sum of its proper divisors (6146).

12286 is an equidigital number, since it uses as much as digits as its factorization.

12286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6145.

The product of its digits is 192, while the sum is 19.

The square root of 12286 is about 110.8422302194. The cubic root of 12286 is about 23.0747411042.

The spelling of 12286 in words is "twelve thousand, two hundred eighty-six".

Divisors: 1 2 6143 12286