220140320 has 24 divisors (see below), whose sum is σ = 520081884. Its totient is φ = 88056064.

The previous prime is 220140317. The next prime is 220140353. The reversal of 220140320 is 23041022.

It can be written as a sum of positive squares in 2 ways, for example, as 216560656 + 3579664 = 14716^2 + 1892^2 .

It is a junction number, because it is equal to n+sod(n) for n = 220140295 and 220140304.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 687779 + ... + 688098.

Almost surely, 2^220140320 is an apocalyptic number.

220140320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220140320 is an abundant number, since it is smaller than the sum of its proper divisors (299941564).

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

220140320 is a wasteful number, since it uses less digits than its factorization.

220140320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1375892 (or 1375884 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 220140320 is about 14837.1264064171. The cubic root of 220140320 is about 603.8093926572.

Adding to 220140320 its reverse (23041022), we get a palindrome (243181342).

The spelling of 220140320 in words is "two hundred twenty million, one hundred forty thousand, three hundred twenty".