20044321 has 16 divisors (see below), whose sum is σ = 23113728. Its totient is φ = 17211600.

The previous prime is 20044319. The next prime is 20044351. The reversal of 20044321 is 12344002.

It is a cyclic number.

It is not a de Polignac number, because 20044321 - 2¹ = 20044319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20044295 and 20044304.

It is not an unprimeable number, because it can be changed into a prime (20044351) 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 in 15 ways as a sum of consecutive naturals, for example, 13980 + ... + 15346.

It is an arithmetic number, because the mean of its divisors is an integer number (1444608).

Almost surely, 2^20044321 is an apocalyptic number.

It is an amenable number.

20044321 is a deficient number, since it is larger than the sum of its proper divisors (3069407).

20044321 is a wasteful number, since it uses less digits than its factorization.

20044321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1452.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 20044321 is about 4477.0884512147. The cubic root of 20044321 is about 271.6421232338.

Adding to 20044321 its reverse (12344002), we get a palindrome (32388323).

It can be divided in two parts, 200 and 44321, that added together give a square (44521 = 211²).

The spelling of 20044321 in words is "twenty million, forty-four thousand, three hundred twenty-one".