243793400 has 48 divisors (see below), whose sum is σ = 569401800. Its totient is φ = 97073280.

The previous prime is 243793387. The next prime is 243793411. The reversal of 243793400 is 4397342.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43139 + ... + 48461.

Almost surely, 2^243793400 is an apocalyptic number.

243793400 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 243793400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284700900).

243793400 is an abundant number, since it is smaller than the sum of its proper divisors (325608400).

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

243793400 is a wasteful number, since it uses less digits than its factorization.

243793400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5568 (or 5559 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 243793400 is about 15613.8848465076. The cubic root of 243793400 is about 624.7035607536.

The spelling of 243793400 in words is "two hundred forty-three million, seven hundred ninety-three thousand, four hundred".