243244320 has 192 divisors, whose sum is σ = 872653824. Its totient is φ = 56376320.

The previous prime is 243244307. The next prime is 243244357. The reversal of 243244320 is 23442342.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 120439 + ... + 122441.

It is an arithmetic number, because the mean of its divisors is an integer number (4545072).

Almost surely, 2^243244320 is an apocalyptic number.

243244320 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 243244320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (436326912).

243244320 is an abundant number, since it is smaller than the sum of its proper divisors (629409504).

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

243244320 is a wasteful number, since it uses less digits than its factorization.

243244320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2055 (or 2047 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 243244320 is about 15596.2918669792. The cubic root of 243244320 is about 624.2342151676.

Adding to 243244320 its reverse (23442342), we get a palindrome (266686662).

The spelling of 243244320 in words is "two hundred forty-three million, two hundred forty-four thousand, three hundred twenty".