13822 has 4 divisors (see below), whose sum is σ = 20736. Its totient is φ = 6910.

The previous prime is 13807. The next prime is 13829. The reversal of 13822 is 22831.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 13796 and 13805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3454 + ... + 3457.

It is an arithmetic number, because the mean of its divisors is an integer number (5184).

13822 is a Friedman number, since it can be written as (8*(2+1))^3-2, using all its digits and the basic arithmetic operations.

2¹³⁸²² is an apocalyptic number.

13822 is a deficient number, since it is larger than the sum of its proper divisors (6914).

13822 is an equidigital number, since it uses as much as digits as its factorization.

13822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6913.

The product of its digits is 96, while the sum is 16.

The square root of 13822 is about 117.5670021732. The cubic root of 13822 is about 23.9988425368.

Subtracting 13822 from its reverse (22831), we obtain a palindrome (9009).

The spelling of 13822 in words is "thirteen thousand, eight hundred twenty-two".