220000320 has 112 divisors (see below), whose sum is σ = 776142720. Its totient is φ = 58664448.

The previous prime is 220000307. The next prime is 220000331. The reversal of 220000320 is 23000022.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4092 + ... + 21371.

Almost surely, 2^220000320 is an apocalyptic number.

220000320 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 220000320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (388071360).

220000320 is an abundant number, since it is smaller than the sum of its proper divisors (556142400).

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

220000320 is a wasteful number, since it uses less digits than its factorization.

220000320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25489 (or 25473 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 9.

The square root of 220000320 is about 14832.4077613852. The cubic root of 220000320 is about 603.6813663735.

Adding to 220000320 its reverse (23000022), we get a palindrome (243000342).

The spelling of 220000320 in words is "two hundred twenty million, three hundred twenty", and thus it is an aban number.