220242220 has 48 divisors (see below), whose sum is σ = 505564416. Its totient is φ = 79928000.

The previous prime is 220242193. The next prime is 220242223. The reversal of 220242220 is 22242022.

It is a junction number, because it is equal to n+sod(n) for n = 220242194 and 220242203.

It is not an unprimeable number, because it can be changed into a prime (220242223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213105 + ... + 214135.

It is an arithmetic number, because the mean of its divisors is an integer number (10532592).

Almost surely, 2^220242220 is an apocalyptic number.

220242220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220242220 is an abundant number, since it is smaller than the sum of its proper divisors (285322196).

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

220242220 is a wasteful number, since it uses less digits than its factorization.

220242220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2022 (or 2020 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 220242220 is about 14840.5599624812. The cubic root of 220242220 is about 603.9025433743.

Adding to 220242220 its reverse (22242022), we get a palindrome (242484242).

The spelling of 220242220 in words is "two hundred twenty million, two hundred forty-two thousand, two hundred twenty".