243200412 has 144 divisors (see below), whose sum is σ = 769659072. Its totient is φ = 63037440.

The previous prime is 243200393. The next prime is 243200417. The reversal of 243200412 is 214002342.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243200417) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 199228 + ... + 200444.

Almost surely, 2^243200412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243200412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (384829536).

243200412 is an abundant number, since it is smaller than the sum of its proper divisors (526458660).

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

243200412 is a wasteful number, since it uses less digits than its factorization.

243200412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308 (or 1303 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 243200412 is about 15594.8841611600. The cubic root of 243200412 is about 624.1966527622.

Adding to 243200412 its reverse (214002342), we get a palindrome (457202754).

The spelling of 243200412 in words is "two hundred forty-three million, two hundred thousand, four hundred twelve".