243525240 has 192 divisors, whose sum is σ = 926976960. Its totient is φ = 54282240.

The previous prime is 243525239. The next prime is 243525253. The reversal of 243525240 is 42525342.

It is a happy number.

243525240 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 an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 102142 + ... + 104498.

It is an arithmetic number, because the mean of its divisors is an integer number (4828005).

Almost surely, 2^243525240 is an apocalyptic number.

243525240 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 243525240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (463488480).

243525240 is an abundant number, since it is smaller than the sum of its proper divisors (683451720).

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

243525240 is a wasteful number, since it uses less digits than its factorization.

243525240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2422 (or 2415 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 27.

The square root of 243525240 is about 15605.2952551370. The cubic root of 243525240 is about 624.4744296318.

It can be divided in two parts, 24352 and 5240, that added together give a palindrome (29592).

The spelling of 243525240 in words is "two hundred forty-three million, five hundred twenty-five thousand, two hundred forty".