243270400 has 54 divisors (see below), whose sum is σ = 602148092. Its totient is φ = 97305600.

The previous prime is 243270373. The next prime is 243270409. The reversal of 243270400 is 4072342.

It is not an unprimeable number, because it can be changed into a prime (243270409) 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, 12606 + ... + 25405.

Almost surely, 2^243270400 is an apocalyptic number.

243270400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243270400 is an abundant number, since it is smaller than the sum of its proper divisors (358877692).

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

243270400 is an equidigital number, since it uses as much as digits as its factorization.

243270400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38037 (or 38018 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 243270400 is about 15597.1279407460. The cubic root of 243270400 is about 624.2565239400.

The spelling of 243270400 in words is "two hundred forty-three million, two hundred seventy thousand, four hundred".