220442844 has 12 divisors (see below), whose sum is σ = 514366664. Its totient is φ = 73480944.

The previous prime is 220442819. The next prime is 220442857. The reversal of 220442844 is 448244022.

220442844 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 9185107 + ... + 9185130.

Almost surely, 2^220442844 is an apocalyptic number.

It is an amenable number.

220442844 is an abundant number, since it is smaller than the sum of its proper divisors (293923820).

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

220442844 is a wasteful number, since it uses less digits than its factorization.

220442844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18370244 (or 18370242 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 30.

The square root of 220442844 is about 14847.3177375579. The cubic root of 220442844 is about 604.0858575667.

Adding to 220442844 its reverse (448244022), we get a palindrome (668686866).

The spelling of 220442844 in words is "two hundred twenty million, four hundred forty-two thousand, eight hundred forty-four".