220642244 has 12 divisors (see below), whose sum is σ = 386241324. Its totient is φ = 110287584.

The previous prime is 220642217. The next prime is 220642259. The reversal of 220642244 is 442246022.

It is a happy number.

220642244 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 136002244 + 84640000 = 11662^2 + 9200^2 .

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, 11834 + ... + 24110.

It is an arithmetic number, because the mean of its divisors is an integer number (32186777).

Almost surely, 2^220642244 is an apocalyptic number.

It is an amenable number.

220642244 is a deficient number, since it is larger than the sum of its proper divisors (165599080).

220642244 is a wasteful number, since it uses less digits than its factorization.

220642244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16774 (or 16772 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 220642244 is about 14854.0312373443. The cubic root of 220642244 is about 604.2679431922.

Adding to 220642244 its reverse (442246022), we get a palindrome (662888266).

The spelling of 220642244 in words is "two hundred twenty million, six hundred forty-two thousand, two hundred forty-four".