220215320 has 128 divisors (see below), whose sum is σ = 580608000. Its totient is φ = 74442240.

The previous prime is 220215319. The next prime is 220215329. The reversal of 220215320 is 23512022.

220215320 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220215329) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 305921 + ... + 306639.

It is an arithmetic number, because the mean of its divisors is an integer number (4536000).

Almost surely, 2^220215320 is an apocalyptic number.

220215320 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 220215320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290304000).

220215320 is an abundant number, since it is smaller than the sum of its proper divisors (360392680).

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

220215320 is a wasteful number, since it uses less digits than its factorization.

220215320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793 (or 789 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 220215320 is about 14839.6536347719. The cubic root of 220215320 is about 603.8779558394.

Adding to 220215320 its reverse (23512022), we get a palindrome (243727342).

The spelling of 220215320 in words is "two hundred twenty million, two hundred fifteen thousand, three hundred twenty".