22863 has 4 divisors (see below), whose sum is σ = 30488.
Its totient is φ = 15240.
The previous prime is 22861. The next prime is 22871. The reversal of 22863 is 36822.
Added to its reverse (36822) it gives a triangular number (59685 = T345).
22863 is an esthetic number in base 9, because in such base its adjacent digits differ by 1.
It is a semiprime because it is the product of two primes.
It is not a de Polignac number, because 22863 - 21 = 22861 is a prime.
It is a D-number.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (22861) 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, 3808 + ... + 3813.
It is an arithmetic number, because the mean of its divisors is an integer number (7622).
222863 is an apocalyptic number.
22863 is a deficient number, since it is larger than the sum of its proper divisors (7625).
22863 is an equidigital number, since it uses as much as digits as its factorization.
22863 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 7624.
The product of its digits is 576, while the sum is 21.
The square root of 22863 is about 151.2051586422.
The cubic root of 22863 is about 28.3820921290.
Adding to 22863 its reverse (36822), we get a triangular number (59685 = T345).
The spelling of 22863 in words is "twenty-two thousand, eight hundred sixty-three".