216859168 has 48 divisors (see below), whose sum is σ = 444062304. Its totient is φ = 104163840.

The previous prime is 216859151. The next prime is 216859189. The reversal of 216859168 is 861958612.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86671 + ... + 89137.

It is an arithmetic number, because the mean of its divisors is an integer number (9251298).

Almost surely, 2^216859168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216859168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222031152).

216859168 is an abundant number, since it is smaller than the sum of its proper divisors (227203136).

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

216859168 is a wasteful number, since it uses less digits than its factorization.

216859168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2585 (or 2577 counting only the distinct ones).

The product of its digits is 207360, while the sum is 46.

The square root of 216859168 is about 14726.1389372775. The cubic root of 216859168 is about 600.7944734814.

The spelling of 216859168 in words is "two hundred sixteen million, eight hundred fifty-nine thousand, one hundred sixty-eight".