220324240 has 20 divisors (see below), whose sum is σ = 512254044. Its totient is φ = 88129664.

The previous prime is 220324229. The next prime is 220324249. The reversal of 220324240 is 42423022.

It can be written as a sum of positive squares in 2 ways, for example, as 56791296 + 163532944 = 7536^2 + 12788^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (220324249) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1376947 + ... + 1377106.

Almost surely, 2^220324240 is an apocalyptic number.

220324240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220324240 is an abundant number, since it is smaller than the sum of its proper divisors (291929804).

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

220324240 is a wasteful number, since it uses less digits than its factorization.

220324240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2754066 (or 2754060 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 220324240 is about 14843.3230780712. The cubic root of 220324240 is about 603.9775001487.

Adding to 220324240 its reverse (42423022), we get a palindrome (262747262).

The spelling of 220324240 in words is "two hundred twenty million, three hundred twenty-four thousand, two hundred forty".