243244220 has 12 divisors (see below), whose sum is σ = 510812904. Its totient is φ = 97297680.

The previous prime is 243244219. The next prime is 243244247. The reversal of 243244220 is 22442342.

243244220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6081086 + ... + 6081125.

It is an arithmetic number, because the mean of its divisors is an integer number (42567742).

Almost surely, 2^243244220 is an apocalyptic number.

243244220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243244220 is an abundant number, since it is smaller than the sum of its proper divisors (267568684).

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

243244220 is a wasteful number, since it uses less digits than its factorization.

243244220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12162220 (or 12162218 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 243244220 is about 15596.2886610886. The cubic root of 243244220 is about 624.2341296248.

Adding to 243244220 its reverse (22442342), we get a palindrome (265686562).

The spelling of 243244220 in words is "two hundred forty-three million, two hundred forty-four thousand, two hundred twenty".