243204230400 has 864 divisors, whose sum is σ = 881144853120. Its totient is φ = 58840842240.

The previous prime is 243204230387. The next prime is 243204230441. The reversal of 243204230400 is 4032402342.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 1405804714 + ... + 1405804886.

It is an arithmetic number, because the mean of its divisors is an integer number (1019843580).

Almost surely, 2^243204230400 is an apocalyptic number.

243204230400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243204230400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (440572426560).

243204230400 is an abundant number, since it is smaller than the sum of its proper divisors (637940622720).

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

243204230400 is a wasteful number, since it uses less digits than its factorization.

243204230400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351 (or 332 counting only the distinct ones).

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

Adding to 243204230400 its reverse (4032402342), we get a palindrome (247236632742).

The spelling of 243204230400 in words is "two hundred forty-three billion, two hundred four million, two hundred thirty thousand, four hundred".