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13843 = 109127
BaseRepresentation
bin11011000010011
3200222201
43120103
5420333
6144031
755234
oct33023
920881
1013843
11a445
128017
1363bb
14508b
15417d
hex3613

13843 has 4 divisors (see below), whose sum is σ = 14080. Its totient is φ = 13608.

The previous prime is 13841. The next prime is 13859. The reversal of 13843 is 34831.

13843 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 34831 = 61571.

It is a cyclic number.

It is not a de Polignac number, because 13843 - 21 = 13841 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13843.

It is not an unprimeable number, because it can be changed into a prime (13841) 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 in 3 ways as a sum of consecutive naturals, for example, 46 + ... + 172.

It is an arithmetic number, because the mean of its divisors is an integer number (3520).

213843 is an apocalyptic number.

13843 is a deficient number, since it is larger than the sum of its proper divisors (237).

13843 is a wasteful number, since it uses less digits than its factorization.

13843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236.

The product of its digits is 288, while the sum is 19.

The square root of 13843 is about 117.6562790505. The cubic root of 13843 is about 24.0109903368.

Subtracting from 13843 its sum of digits (19), we obtain a cube (13824 = 243).

It can be divided in two parts, 138 and 43, that added together give a palindrome (181).

The spelling of 13843 in words is "thirteen thousand, eight hundred forty-three".

Divisors: 1 109 127 13843