243871456 has 24 divisors (see below), whose sum is σ = 480471264. Its totient is φ = 121847040.

The previous prime is 243871427. The next prime is 243871471. The reversal of 243871456 is 654178342.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 79161 + ... + 82183.

It is an arithmetic number, because the mean of its divisors is an integer number (20019636).

Almost surely, 2^243871456 is an apocalyptic number.

It is an amenable number.

243871456 is a deficient number, since it is larger than the sum of its proper divisors (236599808).

243871456 is a wasteful number, since it uses less digits than its factorization.

243871456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5554 (or 5546 counting only the distinct ones).

The product of its digits is 161280, while the sum is 40.

The square root of 243871456 is about 15616.3842165848. The cubic root of 243871456 is about 624.7702246556.

The spelling of 243871456 in words is "two hundred forty-three million, eight hundred seventy-one thousand, four hundred fifty-six".