216304112 has 20 divisors (see below), whose sum is σ = 432609216. Its totient is φ = 104663040.

The previous prime is 216304103. The next prime is 216304117. The reversal of 216304112 is 211403612.

216304112 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216304117) 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 3 ways as a sum of consecutive naturals, for example, 217553 + ... + 218544.

Almost surely, 2^216304112 is an apocalyptic number.

It is an amenable number.

216304112 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

216304112 is a wasteful number, since it uses less digits than its factorization.

216304112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436136 (or 436130 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 216304112 is about 14707.2809179671. The cubic root of 216304112 is about 600.2814531381.

Adding to 216304112 its reverse (211403612), we get a palindrome (427707724).

The spelling of 216304112 in words is "two hundred sixteen million, three hundred four thousand, one hundred twelve".