20444123 has 6 divisors (see below), whose sum is σ = 23781996. Its totient is φ = 17523492.

The previous prime is 20444113. The next prime is 20444147. The reversal of 20444123 is 32144402.

It is not a de Polignac number, because 20444123 - 2⁶ = 20444059 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20444095 and 20444104.

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 5 ways as a sum of consecutive naturals, for example, 208565 + ... + 208662.

It is an arithmetic number, because the mean of its divisors is an integer number (3963666).

Almost surely, 2^20444123 is an apocalyptic number.

20444123 is a deficient number, since it is larger than the sum of its proper divisors (3337873).

20444123 is an equidigital number, since it uses as much as digits as its factorization.

20444123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417241 (or 417234 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 20444123 is about 4521.5177761455. The cubic root of 20444123 is about 273.4362955680.

Adding to 20444123 its reverse (32144402), we get a palindrome (52588525).

The spelling of 20444123 in words is "twenty million, four hundred forty-four thousand, one hundred twenty-three".