20244223 has 4 divisors (see below), whose sum is σ = 20253240. Its totient is φ = 20235208.

The previous prime is 20244199. The next prime is 20244239. The reversal of 20244223 is 32244202.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 32244202 = 2 ⋅16122101.

It is a cyclic number.

It is not a de Polignac number, because 20244223 - 2¹³ = 20236031 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 20244223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20245223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1836 + ... + 6622.

It is an arithmetic number, because the mean of its divisors is an integer number (5063310).

Almost surely, 2^20244223 is an apocalyptic number.

20244223 is a deficient number, since it is larger than the sum of its proper divisors (9017).

20244223 is an equidigital number, since it uses as much as digits as its factorization.

20244223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9016.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 20244223 is about 4499.3580653244. The cubic root of 20244223 is about 272.5421666925.

Adding to 20244223 its reverse (32244202), we get a palindrome (52488425).

The spelling of 20244223 in words is "twenty million, two hundred forty-four thousand, two hundred twenty-three".