243440430 has 32 divisors (see below), whose sum is σ = 588470400. Its totient is φ = 64449312.

The previous prime is 243440429. The next prime is 243440453. The reversal of 243440430 is 34044342.

It is a happy number.

243440430 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 243440430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25020 + ... + 33359.

It is an arithmetic number, because the mean of its divisors is an integer number (18389700).

Almost surely, 2^243440430 is an apocalyptic number.

243440430 is an abundant number, since it is smaller than the sum of its proper divisors (345029970).

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

243440430 is a wasteful number, since it uses less digits than its factorization.

243440430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58528.

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

The square root of 243440430 is about 15602.5776716541. The cubic root of 243440430 is about 624.4019281453.

Adding to 243440430 its reverse (34044342), we get a palindrome (277484772).

The spelling of 243440430 in words is "two hundred forty-three million, four hundred forty thousand, four hundred thirty".