20024443 has 4 divisors (see below), whose sum is σ = 20034040. Its totient is φ = 20014848.

The previous prime is 20024339. The next prime is 20024483. The reversal of 20024443 is 34442002.

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.

It is a cyclic number.

It is not a de Polignac number, because 20024443 - 2⁹ = 20023931 is a prime.

It is a super-4 number, since 4×20024443⁴ (a number of 30 digits) contains 4444 as substring.

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 20024443.

It is not an unprimeable number, because it can be changed into a prime (20024483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198 + ... + 6331.

It is an arithmetic number, because the mean of its divisors is an integer number (5008510).

Almost surely, 2^20024443 is an apocalyptic number.

20024443 is a deficient number, since it is larger than the sum of its proper divisors (9597).

20024443 is an equidigital number, since it uses as much as digits as its factorization.

20024443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9596.

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

The square root of 20024443 is about 4474.8679310120. The cubic root of 20024443 is about 271.5522974909.

Adding to 20024443 its reverse (34442002), we get a palindrome (54466445).

The spelling of 20024443 in words is "twenty million, twenty-four thousand, four hundred forty-three".