216543948 has 24 divisors (see below), whose sum is σ = 505586928. Its totient is φ = 72135936.

The previous prime is 216543947. The next prime is 216543989. The reversal of 216543948 is 849345612.

It is not an unprimeable number, because it can be changed into a prime (216543941) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 18240 + ... + 27672.

It is an arithmetic number, because the mean of its divisors is an integer number (21066122).

Almost surely, 2^216543948 is an apocalyptic number.

It is an amenable number.

216543948 is an abundant number, since it is smaller than the sum of its proper divisors (289042980).

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

216543948 is a wasteful number, since it uses less digits than its factorization.

216543948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11353 (or 11351 counting only the distinct ones).

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

The square root of 216543948 is about 14715.4323076150. The cubic root of 216543948 is about 600.5032333645.

The spelling of 216543948 in words is "two hundred sixteen million, five hundred forty-three thousand, nine hundred forty-eight".