20220243 has 16 divisors (see below), whose sum is σ = 28359936. Its totient is φ = 12789920.

The previous prime is 20220217. The next prime is 20220247. The reversal of 20220243 is 34202202.

It is a cyclic number.

It is not a de Polignac number, because 20220243 - 2¹⁰ = 20219219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20220247) 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 15 ways as a sum of consecutive naturals, for example, 7921 + ... + 10157.

It is an arithmetic number, because the mean of its divisors is an integer number (1772496).

Almost surely, 2^20220243 is an apocalyptic number.

20220243 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20220243 is a deficient number, since it is larger than the sum of its proper divisors (8139693).

20220243 is a wasteful number, since it uses less digits than its factorization.

20220243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2394.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 20220243 is about 4496.6924511245. The cubic root of 20220243 is about 272.4345122209.

Adding to 20220243 its reverse (34202202), we get a palindrome (54422445).

The spelling of 20220243 in words is "twenty million, two hundred twenty thousand, two hundred forty-three".