22843 has 4 divisors (see below), whose sum is σ = 23328. Its totient is φ = 22360.

The previous prime is 22817. The next prime is 22853. The reversal of 22843 is 34822.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22843 - 2⁵ = 22811 is a prime.

It is a super-3 number, since 3×22843³ = 35758613733321, which contains 333 as substring.

It is a Duffinian number.

22843 is a lucky number.

It is a plaindrome in base 12.

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 22843.

It is not an unprimeable number, because it can be changed into a prime (22853) 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, 163 + ... + 268.

It is an arithmetic number, because the mean of its divisors is an integer number (5832).

2²²⁸⁴³ is an apocalyptic number.

22843 is a deficient number, since it is larger than the sum of its proper divisors (485).

22843 is an equidigital number, since it uses as much as digits as its factorization.

22843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484.

The product of its digits is 384, while the sum is 19.

The square root of 22843 is about 151.1390088627. The cubic root of 22843 is about 28.3738137252.

The spelling of 22843 in words is "twenty-two thousand, eight hundred forty-three".