20324443 has 4 divisors (see below), whose sum is σ = 20415808. Its totient is φ = 20233080.

The previous prime is 20324413. The next prime is 20324453. The reversal of 20324443 is 34442302.

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 20324443 - 2²¹ = 18227291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20324413) 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 in 3 ways as a sum of consecutive naturals, for example, 45348 + ... + 45793.

It is an arithmetic number, because the mean of its divisors is an integer number (5103952).

Almost surely, 2^20324443 is an apocalyptic number.

20324443 is a deficient number, since it is larger than the sum of its proper divisors (91365).

20324443 is an equidigital number, since it uses as much as digits as its factorization.

20324443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91364.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 20324443 is about 4508.2638565195. The cubic root of 20324443 is about 272.9016851814.

Adding to 20324443 its reverse (34442302), we get a palindrome (54766745).

The spelling of 20324443 in words is "twenty million, three hundred twenty-four thousand, four hundred forty-three".