243194856 has 16 divisors (see below), whose sum is σ = 607987200. Its totient is φ = 81064944.

The previous prime is 243194837. The next prime is 243194867. The reversal of 243194856 is 658491342.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5066536 + ... + 5066583.

It is an arithmetic number, because the mean of its divisors is an integer number (37999200).

Almost surely, 2^243194856 is an apocalyptic number.

It is an amenable number.

243194856 is an abundant number, since it is smaller than the sum of its proper divisors (364792344).

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

243194856 is a wasteful number, since it uses less digits than its factorization.

243194856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10133128 (or 10133124 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The square root of 243194856 is about 15594.7060248021. The cubic root of 243194856 is about 624.1918993944.

The spelling of 243194856 in words is "two hundred forty-three million, one hundred ninety-four thousand, eight hundred fifty-six".