243427900 has 18 divisors (see below), whose sum is σ = 528238760. Its totient is φ = 97371120.

The previous prime is 243427897. The next prime is 243427907. The reversal of 243427900 is 9724342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243427907) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 1217040 + ... + 1217239.

Almost surely, 2^243427900 is an apocalyptic number.

243427900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243427900 is an abundant number, since it is smaller than the sum of its proper divisors (284810860).

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

243427900 is a wasteful number, since it uses less digits than its factorization.

243427900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2434293 (or 2434286 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 243427900 is about 15602.1761302711. The cubic root of 243427900 is about 624.3912152022.

The spelling of 243427900 in words is "two hundred forty-three million, four hundred twenty-seven thousand, nine hundred".