20220443 has 4 divisors (see below), whose sum is σ = 20254800. Its totient is φ = 20186088.

The previous prime is 20220407. The next prime is 20220451. The reversal of 20220443 is 34402202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34402202 = 2 ⋅17201101.

It is a cyclic number.

It is not a de Polignac number, because 20220443 - 2⁶ = 20220379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20220143) 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, 16280 + ... + 17477.

It is an arithmetic number, because the mean of its divisors is an integer number (5063700).

Almost surely, 2^20220443 is an apocalyptic number.

20220443 is a deficient number, since it is larger than the sum of its proper divisors (34357).

20220443 is an equidigital number, since it uses as much as digits as its factorization.

20220443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34356.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 20220443 is about 4496.7146896373. The cubic root of 20220443 is about 272.4354104416.

Adding to 20220443 its reverse (34402202), we get a palindrome (54622645).

The spelling of 20220443 in words is "twenty million, two hundred twenty thousand, four hundred forty-three".