216022368 has 72 divisors (see below), whose sum is σ = 581029848. Its totient is φ = 70275072.

The previous prime is 216022361. The next prime is 216022379. The reversal of 216022368 is 863220612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216022361) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 176896 + ... + 178112.

It is an arithmetic number, because the mean of its divisors is an integer number (8069859).

Almost surely, 2^216022368 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 216022368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290514924).

216022368 is an abundant number, since it is smaller than the sum of its proper divisors (365007480).

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

216022368 is a wasteful number, since it uses less digits than its factorization.

216022368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316 (or 1265 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 216022368 is about 14697.6994118127. The cubic root of 216022368 is about 600.0207103962.

The spelling of 216022368 in words is "two hundred sixteen million, twenty-two thousand, three hundred sixty-eight".