220315220 has 18 divisors (see below), whose sum is σ = 462801402. Its totient is φ = 88099536.

The previous prime is 220315213. The next prime is 220315259. The reversal of 220315220 is 22513022.

220315220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 176252176 + 44063044 = 13276^2 + 6638^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64721 + ... + 68039.

It is an arithmetic number, because the mean of its divisors is an integer number (25711189).

Almost surely, 2^220315220 is an apocalyptic number.

220315220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220315220 is an abundant number, since it is smaller than the sum of its proper divisors (242486182).

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

220315220 is an frugal number, since it uses more digits than its factorization.

220315220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6647 (or 3326 counting only the distinct ones).

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

The square root of 220315220 is about 14843.0192346436. The cubic root of 220315220 is about 603.9692578245.

Adding to 220315220 its reverse (22513022), we get a palindrome (242828242).

The spelling of 220315220 in words is "two hundred twenty million, three hundred fifteen thousand, two hundred twenty".