26823 has 4 divisors (see below), whose sum is σ = 35768. Its totient is φ = 17880.

The previous prime is 26821. The next prime is 26833. The reversal of 26823 is 32862.

Added to its reverse (32862) it gives a triangular number (59685 = T₃₄₅).

26823 is digitally balanced in base 4, 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.

It is not a de Polignac number, because 26823 - 2¹ = 26821 is a prime.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 26823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26821) 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, 4468 + ... + 4473.

It is an arithmetic number, because the mean of its divisors is an integer number (8942).

2²⁶⁸²³ is an apocalyptic number.

26823 is a deficient number, since it is larger than the sum of its proper divisors (8945).

26823 is an equidigital number, since it uses as much as digits as its factorization.

26823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8944.

The product of its digits is 576, while the sum is 21.

The square root of 26823 is about 163.7772878027. Note that the first 3 decimals coincide. The cubic root of 26823 is about 29.9343006694.

Adding to 26823 its reverse (32862), we get a triangular number (59685 = T₃₄₅).

The spelling of 26823 in words is "twenty-six thousand, eight hundred twenty-three".