20444023 has 2 divisors, whose sum is σ = 20444024. Its totient is φ = 20444022.

The previous prime is 20444009. The next prime is 20444027. The reversal of 20444023 is 32044402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20444023 - 2¹⁷ = 20312951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20444027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10222011 + 10222012.

It is an arithmetic number, because the mean of its divisors is an integer number (10222012).

Almost surely, 2^20444023 is an apocalyptic number.

20444023 is a deficient number, since it is larger than the sum of its proper divisors (1).

20444023 is an equidigital number, since it uses as much as digits as its factorization.

20444023 is an evil number, because the sum of its binary digits is even.

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

The square root of 20444023 is about 4521.5067178984. The cubic root of 20444023 is about 273.4358497402.

Adding to 20444023 its reverse (32044402), we get a palindrome (52488425).

The spelling of 20444023 in words is "twenty million, four hundred forty-four thousand, twenty-three".