243440034 has 16 divisors (see below), whose sum is σ = 515520288. Its totient is φ = 76373312.

The previous prime is 243440033. The next prime is 243440039. The reversal of 243440034 is 430044342.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 243439986 and 243440013.

It is not an unprimeable number, because it can be changed into a prime (243440033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1193232 + ... + 1193435.

It is an arithmetic number, because the mean of its divisors is an integer number (32220018).

Almost surely, 2^243440034 is an apocalyptic number.

243440034 is an abundant number, since it is smaller than the sum of its proper divisors (272080254).

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

243440034 is a wasteful number, since it uses less digits than its factorization.

243440034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2386689.

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

The square root of 243440034 is about 15602.5649814381. The cubic root of 243440034 is about 624.4015895775.

Adding to 243440034 its reverse (430044342), we get a palindrome (673484376).

The spelling of 243440034 in words is "two hundred forty-three million, four hundred forty thousand, thirty-four".