220335240 has 64 divisors (see below), whose sum is σ = 665496000. Its totient is φ = 58356992.

The previous prime is 220335211. The next prime is 220335263. The reversal of 220335240 is 42533022.

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, 11719 + ... + 24041.

It is an arithmetic number, because the mean of its divisors is an integer number (10398375).

Almost surely, 2^220335240 is an apocalyptic number.

220335240 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 220335240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (332748000).

220335240 is an abundant number, since it is smaller than the sum of its proper divisors (445160760).

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

220335240 is a wasteful number, since it uses less digits than its factorization.

220335240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12486 (or 12482 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 220335240 is about 14843.6936104192. The cubic root of 220335240 is about 603.9875514590.

Adding to 220335240 its reverse (42533022), we get a palindrome (262868262).

The spelling of 220335240 in words is "two hundred twenty million, three hundred thirty-five thousand, two hundred forty".