20244423 has 4 divisors (see below), whose sum is σ = 26992568. Its totient is φ = 13496280.

The previous prime is 20244409. The next prime is 20244431. The reversal of 20244423 is 32444202.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20244423 - 2⁵ = 20244391 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 20244423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20249423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3374068 + ... + 3374073.

It is an arithmetic number, because the mean of its divisors is an integer number (6748142).

Almost surely, 2^20244423 is an apocalyptic number.

20244423 is a deficient number, since it is larger than the sum of its proper divisors (6748145).

20244423 is an equidigital number, since it uses as much as digits as its factorization.

20244423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6748144.

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

The square root of 20244423 is about 4499.3802906623. The cubic root of 20244423 is about 272.5430642038.

Adding to 20244423 its reverse (32444202), we get a palindrome (52688625).

The spelling of 20244423 in words is "twenty million, two hundred forty-four thousand, four hundred twenty-three".