243255340 has 24 divisors (see below), whose sum is σ = 511187040. Its totient is φ = 97235328.

The previous prime is 243255323. The next prime is 243255361. The reversal of 243255340 is 43552342.

It is a junction number, because it is equal to n+sod(n) for n = 243255299 and 243255308.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34344 + ... + 40816.

It is an arithmetic number, because the mean of its divisors is an integer number (21299460).

Almost surely, 2^243255340 is an apocalyptic number.

243255340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243255340 is an abundant number, since it is smaller than the sum of its proper divisors (267931700).

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

243255340 is a wasteful number, since it uses less digits than its factorization.

243255340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8361 (or 8359 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 28.

The square root of 243255340 is about 15596.6451520832. The cubic root of 243255340 is about 624.2436418450.

The spelling of 243255340 in words is "two hundred forty-three million, two hundred fifty-five thousand, three hundred forty".