243022400 has 84 divisors (see below), whose sum is σ = 607179888. Its totient is φ = 95715840.

The previous prime is 243022399. The next prime is 243022453. The reversal of 243022400 is 4220342.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 106067 + ... + 108333.

It is an arithmetic number, because the mean of its divisors is an integer number (7228332).

Almost surely, 2^243022400 is an apocalyptic number.

243022400 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 243022400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303589944).

243022400 is an abundant number, since it is smaller than the sum of its proper divisors (364157488).

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

243022400 is a wasteful number, since it uses less digits than its factorization.

243022400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2356 (or 2341 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 243022400 is about 15589.1757318981. The cubic root of 243022400 is about 624.0443207617.

Adding to 243022400 its reverse (4220342), we get a palindrome (247242742).

The spelling of 243022400 in words is "two hundred forty-three million, twenty-two thousand, four hundred".