20441423 has 4 divisors (see below), whose sum is σ = 20500680. Its totient is φ = 20382168.

The previous prime is 20441419. The next prime is 20441437. The reversal of 20441423 is 32414402.

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

It is a cyclic number.

It is not a de Polignac number, because 20441423 - 2² = 20441419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20441395 and 20441404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20441023) 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, 29108 + ... + 29801.

It is an arithmetic number, because the mean of its divisors is an integer number (5125170).

Almost surely, 2^20441423 is an apocalyptic number.

20441423 is a deficient number, since it is larger than the sum of its proper divisors (59257).

20441423 is an equidigital number, since it uses as much as digits as its factorization.

20441423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59256.

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

The square root of 20441423 is about 4521.2191939785. The cubic root of 20441423 is about 273.4242577075.

Adding to 20441423 its reverse (32414402), we get a palindrome (52855825).

The spelling of 20441423 in words is "twenty million, four hundred forty-one thousand, four hundred twenty-three".