220444023 has 16 divisors (see below), whose sum is σ = 310100480. Its totient is φ = 138910464.

The previous prime is 220444009. The next prime is 220444027. The reversal of 220444023 is 320444022.

It is not a de Polignac number, because 220444023 - 2⁵ = 220443991 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 (220444027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22215 + ... + 30567.

It is an arithmetic number, because the mean of its divisors is an integer number (19381280).

Almost surely, 2^220444023 is an apocalyptic number.

220444023 is a deficient number, since it is larger than the sum of its proper divisors (89656457).

220444023 is a wasteful number, since it uses less digits than its factorization.

220444023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8838.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 220444023 is about 14847.3574416460. The cubic root of 220444023 is about 604.0869345140.

Adding to 220444023 its reverse (320444022), we get a palindrome (540888045).

Subtracting 220444023 from its reverse (320444022), we obtain a palindrome (99999999).

The spelling of 220444023 in words is "two hundred twenty million, four hundred forty-four thousand, twenty-three".