243340200 has 168 divisors, whose sum is σ = 848769150. Its totient is φ = 64851840.

The previous prime is 243340187. The next prime is 243340213. The reversal of 243340200 is 2043342.

It is an interprime number because it is at equal distance from previous prime (243340187) and next prime (243340213).

It can be written as a sum of positive squares in 3 ways, for example, as 183710916 + 59629284 = 13554^2 + 7722^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a zygodrome in base 9.

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 41 ways as a sum of consecutive naturals, for example, 144966 + ... + 146634.

Almost surely, 2^243340200 is an apocalyptic number.

243340200 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 243340200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (424384575).

243340200 is an abundant number, since it is smaller than the sum of its proper divisors (605428950).

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

243340200 is a wasteful number, since it uses less digits than its factorization.

243340200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1703 (or 1679 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 243340200 is about 15599.3653717066. The cubic root of 243340200 is about 624.3162228576.

Adding to 243340200 its reverse (2043342), we get a palindrome (245383542).

The spelling of 243340200 in words is "two hundred forty-three million, three hundred forty thousand, two hundred".