220506220 has 48 divisors (see below), whose sum is σ = 510416928. Its totient is φ = 79349760.

The previous prime is 220506203. The next prime is 220506239. The reversal of 220506220 is 22605022.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16174 + ... + 26506.

It is an arithmetic number, because the mean of its divisors is an integer number (10633686).

Almost surely, 2^220506220 is an apocalyptic number.

220506220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220506220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255208464).

220506220 is an abundant number, since it is smaller than the sum of its proper divisors (289910708).

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

220506220 is a wasteful number, since it uses less digits than its factorization.

220506220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10450 (or 10448 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 220506220 is about 14849.4518417348. The cubic root of 220506220 is about 604.1437423776.

The spelling of 220506220 in words is "two hundred twenty million, five hundred six thousand, two hundred twenty".