243448420 has 24 divisors (see below), whose sum is σ = 513503424. Its totient is φ = 96948576.

The previous prime is 243448393. The next prime is 243448423. The reversal of 243448420 is 24844342.

It is not an unprimeable number, because it can be changed into a prime (243448423) 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 7 ways as a sum of consecutive naturals, for example, 22272 + ... + 31351.

It is an arithmetic number, because the mean of its divisors is an integer number (21395976).

Almost surely, 2^243448420 is an apocalyptic number.

243448420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243448420 is an abundant number, since it is smaller than the sum of its proper divisors (270055004).

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

243448420 is a wasteful number, since it uses less digits than its factorization.

243448420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53859 (or 53857 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 31.

The square root of 243448420 is about 15602.8337169887. The cubic root of 243448420 is about 624.4087592714.

The spelling of 243448420 in words is "two hundred forty-three million, four hundred forty-eight thousand, four hundred twenty".