243224220 has 24 divisors (see below), whose sum is σ = 681027984. Its totient is φ = 64859776.

The previous prime is 243224213. The next prime is 243224221. The reversal of 243224220 is 22422342.

243224220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243224221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2026809 + ... + 2026928.

It is an arithmetic number, because the mean of its divisors is an integer number (28376166).

Almost surely, 2^243224220 is an apocalyptic number.

243224220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243224220 is an abundant number, since it is smaller than the sum of its proper divisors (437803764).

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

243224220 is a wasteful number, since it uses less digits than its factorization.

243224220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4053749 (or 4053747 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 243224220 is about 15595.6474697269. The cubic root of 243224220 is about 624.2170205855.

Adding to 243224220 its reverse (22422342), we get a palindrome (265646562).

The spelling of 243224220 in words is "two hundred forty-three million, two hundred twenty-four thousand, two hundred twenty".