243808356 has 48 divisors (see below), whose sum is σ = 657115200. Its totient is φ = 69534720.

The previous prime is 243808343. The next prime is 243808403. The reversal of 243808356 is 653808342.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52081 + ... + 56568.

It is an arithmetic number, because the mean of its divisors is an integer number (13689900).

Almost surely, 2^243808356 is an apocalyptic number.

It is an amenable number.

243808356 is an abundant number, since it is smaller than the sum of its proper divisors (413306844).

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

243808356 is a wasteful number, since it uses less digits than its factorization.

243808356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108684 (or 108682 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The square root of 243808356 is about 15614.3637718608. The cubic root of 243808356 is about 624.7163350609.

The spelling of 243808356 in words is "two hundred forty-three million, eight hundred eight thousand, three hundred fifty-six".