20326222 has 16 divisors (see below), whose sum is σ = 35114112. Its totient is φ = 8643960.

The previous prime is 20326213. The next prime is 20326247. The reversal of 20326222 is 22262302.

It is a self number, because there is not a number n which added to its sum of digits gives 20326222.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3708 + ... + 7375.

It is an arithmetic number, because the mean of its divisors is an integer number (2194632).

Almost surely, 2^20326222 is an apocalyptic number.

20326222 is a deficient number, since it is larger than the sum of its proper divisors (14787890).

20326222 is a wasteful number, since it uses less digits than its factorization.

20326222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11223.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 20326222 is about 4508.4611565367. The cubic root of 20326222 is about 272.9096473173.

Adding to 20326222 its reverse (22262302), we get a palindrome (42588524).

The spelling of 20326222 in words is "twenty million, three hundred twenty-six thousand, two hundred twenty-two".