220944 has 20 divisors (see below), whose sum is σ = 570896. Its totient is φ = 73632.

The previous prime is 220939. The next prime is 220973. The reversal of 220944 is 449022.

220944 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×220944² = 97632502272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 220944.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 220944.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2254 + ... + 2349.

2²²⁰⁹⁴⁴ is an apocalyptic number.

220944 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

220944 is an abundant number, since it is smaller than the sum of its proper divisors (349952).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220944 is a wasteful number, since it uses less digits than its factorization.

220944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4614 (or 4608 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 220944 is about 470.0468061800. The cubic root of 220944 is about 60.4543288494.

Adding to 220944 its reverse (449022), we get a palindrome (669966).

The spelling of 220944 in words is "two hundred twenty thousand, nine hundred forty-four".