243026400 has 144 divisors (see below), whose sum is σ = 799167600. Its totient is φ = 64143360.

The previous prime is 243026383. The next prime is 243026401. The reversal of 243026400 is 4620342.

243026400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243026401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 261136 + ... + 262064.

It is an arithmetic number, because the mean of its divisors is an integer number (5549775).

Almost surely, 2^243026400 is an apocalyptic number.

243026400 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 243026400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (399583800).

243026400 is an abundant number, since it is smaller than the sum of its proper divisors (556141200).

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

243026400 is a wasteful number, since it uses less digits than its factorization.

243026400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061 (or 1048 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 243026400 is about 15589.3040255170. The cubic root of 243026400 is about 624.0477445388.

Adding to 243026400 its reverse (4620342), we get a palindrome (247646742).

The spelling of 243026400 in words is "two hundred forty-three million, twenty-six thousand, four hundred".