220322240 has 56 divisors (see below), whose sum is σ = 533290272. Its totient is φ = 86676480.

The previous prime is 220322189. The next prime is 220322243. The reversal of 220322240 is 42223022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220322243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13877 + ... + 25163.

Almost surely, 2^220322240 is an apocalyptic number.

220322240 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 220322240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266645136).

220322240 is an abundant number, since it is smaller than the sum of its proper divisors (312968032).

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

220322240 is a wasteful number, since it uses less digits than its factorization.

220322240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11365 (or 11355 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 220322240 is about 14843.2557075596. The cubic root of 220322240 is about 603.9756726017.

Adding to 220322240 its reverse (42223022), we get a palindrome (262545262).

The spelling of 220322240 in words is "two hundred twenty million, three hundred twenty-two thousand, two hundred forty".