243203200 has 48 divisors (see below), whose sum is σ = 600795810. Its totient is φ = 97280000.

The previous prime is 243203179. The next prime is 243203209. The reversal of 243203200 is 2302342.

It can be written as a sum of positive squares in 3 ways, for example, as 202549824 + 40653376 = 14232^2 + 6376^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243203209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34801 + ... + 41200.

Almost surely, 2^243203200 is an apocalyptic number.

243203200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243203200 is an abundant number, since it is smaller than the sum of its proper divisors (357592610).

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

243203200 is an equidigital number, since it uses as much as digits as its factorization.

243203200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76025 (or 76008 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 243203200 is about 15594.9735491921. The cubic root of 243203200 is about 624.1990379742.

Adding to 243203200 its reverse (2302342), we get a palindrome (245505542).

The spelling of 243203200 in words is "two hundred forty-three million, two hundred three thousand, two hundred".