243204104 has 128 divisors (see below), whose sum is σ = 575769600. Its totient is φ = 94659840.

The previous prime is 243204103. The next prime is 243204109. The reversal of 243204104 is 401402342.

It is not an unprimeable number, because it can be changed into a prime (243204103) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1456229 + ... + 1456395.

It is an arithmetic number, because the mean of its divisors is an integer number (4498200).

Almost surely, 2^243204104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243204104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287884800).

243204104 is an abundant number, since it is smaller than the sum of its proper divisors (332565496).

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

243204104 is a wasteful number, since it uses less digits than its factorization.

243204104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283 (or 279 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 243204104 is about 15595.0025328629. The cubic root of 243204104 is about 624.1998113676.

Adding to 243204104 its reverse (401402342), we get a palindrome (644606446).

The spelling of 243204104 in words is "two hundred forty-three million, two hundred four thousand, one hundred four".