243204450 has 24 divisors (see below), whose sum is σ = 603147408. Its totient is φ = 64854480.

The previous prime is 243204449. The next prime is 243204457. The reversal of 243204450 is 54402342.

243204450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 243204450.

It is not an unprimeable number, because it can be changed into a prime (243204457) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 810532 + ... + 810831.

It is an arithmetic number, because the mean of its divisors is an integer number (25131142).

Almost surely, 2^243204450 is an apocalyptic number.

243204450 is an abundant number, since it is smaller than the sum of its proper divisors (359942958).

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

243204450 is a wasteful number, since it uses less digits than its factorization.

243204450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621378 (or 1621373 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 243204450 is about 15595.0136261563. The cubic root of 243204450 is about 624.2001073783.

Adding to 243204450 its reverse (54402342), we get a palindrome (297606792).

The spelling of 243204450 in words is "two hundred forty-three million, two hundred four thousand, four hundred fifty".