20322444 has 12 divisors (see below), whose sum is σ = 47419064. Its totient is φ = 6774144.

The previous prime is 20322433. The next prime is 20322451. The reversal of 20322444 is 44422302.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 20322444.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 846757 + ... + 846780.

Almost surely, 2^20322444 is an apocalyptic number.

It is an amenable number.

20322444 is an abundant number, since it is smaller than the sum of its proper divisors (27096620).

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

20322444 is a wasteful number, since it uses less digits than its factorization.

20322444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693544 (or 1693542 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 20322444 is about 4508.0421470967. The cubic root of 20322444 is about 272.8927378537.

Adding to 20322444 its reverse (44422302), we get a palindrome (64744746).

The spelling of 20322444 in words is "twenty million, three hundred twenty-two thousand, four hundred forty-four".