243640014 has 8 divisors (see below), whose sum is σ = 487280040. Its totient is φ = 81213336.

The previous prime is 243640013. The next prime is 243640027. The reversal of 243640014 is 410046342.

It is a sphenic number, since it is the product of 3 distinct primes.

243640014 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243640013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20303329 + ... + 20303340.

It is an arithmetic number, because the mean of its divisors is an integer number (60910005).

Almost surely, 2^243640014 is an apocalyptic number.

243640014 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

243640014 is a wasteful number, since it uses less digits than its factorization.

243640014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40606674.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 243640014 is about 15608.9722275363. The cubic root of 243640014 is about 624.5725196302.

Adding to 243640014 its reverse (410046342), we get a palindrome (653686356).

The spelling of 243640014 in words is "two hundred forty-three million, six hundred forty thousand, fourteen".