20220943 has 4 divisors (see below), whose sum is σ = 20232720. Its totient is φ = 20209168.

The previous prime is 20220923. The next prime is 20220947. The reversal of 20220943 is 34902202.

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 20220943 - 2¹⁷ = 20089871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20220947) 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, 2758 + ... + 6931.

It is an arithmetic number, because the mean of its divisors is an integer number (5058180).

Almost surely, 2^20220943 is an apocalyptic number.

20220943 is a deficient number, since it is larger than the sum of its proper divisors (11777).

20220943 is an equidigital number, since it uses as much as digits as its factorization.

20220943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11776.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 20220943 is about 4496.7702854382. The cubic root of 20220943 is about 272.4376559675.

The spelling of 20220943 in words is "twenty million, two hundred twenty thousand, nine hundred forty-three".