243285216 has 48 divisors (see below), whose sum is σ = 639450000. Its totient is φ = 80990208.

The previous prime is 243285193. The next prime is 243285221. The reversal of 243285216 is 612582342.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 118890 + ... + 120918.

It is an arithmetic number, because the mean of its divisors is an integer number (13321875).

Almost surely, 2^243285216 is an apocalyptic number.

It is an amenable number.

243285216 is an abundant number, since it is smaller than the sum of its proper divisors (396164784).

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

243285216 is a wasteful number, since it uses less digits than its factorization.

243285216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3291 (or 3283 counting only the distinct ones).

The product of its digits is 23040, while the sum is 33.

The square root of 243285216 is about 15597.6028927525. The cubic root of 243285216 is about 624.2691968024.

The spelling of 243285216 in words is "two hundred forty-three million, two hundred eighty-five thousand, two hundred sixteen".