20027443 has 2 divisors, whose sum is σ = 20027444. Its totient is φ = 20027442.

The previous prime is 20027437. The next prime is 20027461. The reversal of 20027443 is 34472002.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20027443 is a prime.

It is not a weakly prime, because it can be changed into another prime (20025443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10013721 + 10013722.

It is an arithmetic number, because the mean of its divisors is an integer number (10013722).

Almost surely, 2^20027443 is an apocalyptic number.

20027443 is a deficient number, since it is larger than the sum of its proper divisors (1).

20027443 is an equidigital number, since it uses as much as digits as its factorization.

20027443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 20027443 is about 4475.2031238816. The cubic root of 20027443 is about 271.5658578550.

Adding to 20027443 its reverse (34472002), we get a palindrome (54499445).

The spelling of 20027443 in words is "twenty million, twenty-seven thousand, four hundred forty-three".