243400200 has 48 divisors (see below), whose sum is σ = 754542480. Its totient is φ = 64906560.

The previous prime is 243400181. The next prime is 243400247. The reversal of 243400200 is 2004342.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 243400200.

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, 202234 + ... + 203433.

It is an arithmetic number, because the mean of its divisors is an integer number (15719635).

Almost surely, 2^243400200 is an apocalyptic number.

243400200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243400200 is an abundant number, since it is smaller than the sum of its proper divisors (511142280).

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

243400200 is a wasteful number, since it uses less digits than its factorization.

243400200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405686 (or 405677 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 243400200 is about 15601.2884083335. The cubic root of 243400200 is about 624.3675308550.

Adding to 243400200 its reverse (2004342), we get a palindrome (245404542).

The spelling of 243400200 in words is "two hundred forty-three million, four hundred thousand, two hundred".