20322 has 12 divisors (see below), whose sum is σ = 44070. Its totient is φ = 6768.

The previous prime is 20297. The next prime is 20323. The reversal of 20322 is 22302.

20322 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 19881 + 441 = 141^2 + 21^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a nialpdrome in base 13.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 20322.

It is not an unprimeable number, because it can be changed into a prime (20323) by changing a digit.

20322 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 547 + ... + 582.

2²⁰³²² is an apocalyptic number.

20322 is an abundant number, since it is smaller than the sum of its proper divisors (23748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20322 is a wasteful number, since it uses less digits than its factorization.

20322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137 (or 1134 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 9.

The square root of 20322 is about 142.5552524462. Note that the first 3 decimals coincide. The cubic root of 20322 is about 27.2890750474.

Adding to 20322 its reverse (22302), we get a palindrome (42624).

It can be divided in two parts, 203 and 22, that added together give a square (225 = 15²).

The spelling of 20322 in words is "twenty thousand, three hundred twenty-two", and thus it is an iban number.