243332220 has 72 divisors (see below), whose sum is σ = 723817584. Its totient is φ = 61067264.

The previous prime is 243332209. The next prime is 243332251. The reversal of 243332220 is 22233342.

243332220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10324 + ... + 24356.

It is an arithmetic number, because the mean of its divisors is an integer number (10053022).

Almost surely, 2^243332220 is an apocalyptic number.

243332220 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 243332220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (361908792).

243332220 is an abundant number, since it is smaller than the sum of its proper divisors (480485364).

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

243332220 is a wasteful number, since it uses less digits than its factorization.

243332220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14079 (or 14060 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 21.

The square root of 243332220 is about 15599.1095899734. The cubic root of 243332220 is about 624.3093982585.

Adding to 243332220 its reverse (22233342), we get a palindrome (265565562).

It can be divided in two parts, 2433322 and 20, that added together give a palindrome (2433342).

The spelling of 243332220 in words is "two hundred forty-three million, three hundred thirty-two thousand, two hundred twenty".