20323422 has 48 divisors (see below), whose sum is σ = 50854752. Its totient is φ = 5745600.

The previous prime is 20323379. The next prime is 20323423. The reversal of 20323422 is 22432302.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20323395 and 20323404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20323423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11928 + ... + 13524.

It is an arithmetic number, because the mean of its divisors is an integer number (1059474).

Almost surely, 2^20323422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20323422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25427376).

20323422 is an abundant number, since it is smaller than the sum of its proper divisors (30531330).

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

20323422 is a wasteful number, since it uses less digits than its factorization.

20323422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1713 (or 1710 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 20323422 is about 4508.1506186018. The cubic root of 20323422 is about 272.8971153590.

Adding to 20323422 its reverse (22432302), we get a palindrome (42755724).

The spelling of 20323422 in words is "twenty million, three hundred twenty-three thousand, four hundred twenty-two".