216608224 has 36 divisors (see below), whose sum is σ = 496075104. Its totient is φ = 92831424.

The previous prime is 216608219. The next prime is 216608233. The reversal of 216608224 is 422806612.

216608224 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67504 + ... + 70639.

It is an arithmetic number, because the mean of its divisors is an integer number (13779864).

Almost surely, 2^216608224 is an apocalyptic number.

It is an amenable number.

216608224 is an abundant number, since it is smaller than the sum of its proper divisors (279466880).

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

216608224 is a wasteful number, since it uses less digits than its factorization.

216608224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138167 (or 138152 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 216608224 is about 14717.6161113137. The cubic root of 216608224 is about 600.5626425943.

The spelling of 216608224 in words is "two hundred sixteen million, six hundred eight thousand, two hundred twenty-four".