20444313 has 16 divisors (see below), whose sum is σ = 28424000. Its totient is φ = 13058496.

The previous prime is 20444293. The next prime is 20444327. The reversal of 20444313 is 31344402.

It is not a de Polignac number, because 20444313 - 2²² = 16250009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20444313.

It is not an unprimeable number, because it can be changed into a prime (20444113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6063 + ... + 8811.

It is an arithmetic number, because the mean of its divisors is an integer number (1776500).

Almost surely, 2^20444313 is an apocalyptic number.

It is an amenable number.

20444313 is a deficient number, since it is larger than the sum of its proper divisors (7979687).

20444313 is a wasteful number, since it uses less digits than its factorization.

20444313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2856.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 20444313 is about 4521.5387867406. The cubic root of 20444313 is about 273.4371426368.

Adding to 20444313 its reverse (31344402), we get a palindrome (51788715).

The spelling of 20444313 in words is "twenty million, four hundred forty-four thousand, three hundred thirteen".