20330443 has 12 divisors (see below), whose sum is σ = 24202200. Its totient is φ = 17019072.

The previous prime is 20330411. The next prime is 20330467. The reversal of 20330443 is 34403302.

It is not a de Polignac number, because 20330443 - 2⁵ = 20330411 is a prime.

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 20330443.

It is not an unprimeable number, because it can be changed into a prime (20330143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2718 + ... + 6931.

It is an arithmetic number, because the mean of its divisors is an integer number (2016850).

Almost surely, 2^20330443 is an apocalyptic number.

20330443 is a deficient number, since it is larger than the sum of its proper divisors (3871757).

20330443 is an equidigital number, since it uses as much as digits as its factorization.

20330443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9706 (or 9699 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 20330443 is about 4508.9292520509. The cubic root of 20330443 is about 272.9285370696.

Adding to 20330443 its reverse (34403302), we get a palindrome (54733745).

The spelling of 20330443 in words is "twenty million, three hundred thirty thousand, four hundred forty-three".