243330240 has 56 divisors (see below), whose sum is σ = 772576560. Its totient is φ = 64887808.

The previous prime is 243330239. The next prime is 243330251. The reversal of 243330240 is 42033342.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125775 + ... + 127694.

It is an arithmetic number, because the mean of its divisors is an integer number (13796010).

Almost surely, 2^243330240 is an apocalyptic number.

243330240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243330240 is an abundant number, since it is smaller than the sum of its proper divisors (529246320).

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

243330240 is a wasteful number, since it uses less digits than its factorization.

243330240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253489 (or 253479 counting only the distinct ones).

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

The square root of 243330240 is about 15599.0461246834. The cubic root of 243330240 is about 624.3077049138.

Adding to 243330240 its reverse (42033342), we get a palindrome (285363582).

It can be divided in two parts, 2433302 and 40, that added together give a palindrome (2433342).

The spelling of 243330240 in words is "two hundred forty-three million, three hundred thirty thousand, two hundred forty".