220644226 has 48 divisors (see below), whose sum is σ = 391466880. Its totient is φ = 92901600.

The previous prime is 220644197. The next prime is 220644239. The reversal of 220644226 is 622446022.

It is a junction number, because it is equal to n+sod(n) for n = 220644194 and 220644203.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 215596 + ... + 216616.

It is an arithmetic number, because the mean of its divisors is an integer number (8155560).

Almost surely, 2^220644226 is an apocalyptic number.

220644226 is a deficient number, since it is larger than the sum of its proper divisors (170822654).

220644226 is a wasteful number, since it uses less digits than its factorization.

220644226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111 (or 1100 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 220644226 is about 14854.0979530903. The cubic root of 220644226 is about 604.2697525397.

It can be divided in two parts, 220 and 644226, that added together give a palindrome (644446).

The spelling of 220644226 in words is "two hundred twenty million, six hundred forty-four thousand, two hundred twenty-six".