216727990 has 16 divisors (see below), whose sum is σ = 390433248. Its totient is φ = 86619456.

The previous prime is 216727969. The next prime is 216727993. The reversal of 216727990 is 99727612.

216727990 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 not an unprimeable number, because it can be changed into a prime (216727993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4714 + ... + 21346.

It is an arithmetic number, because the mean of its divisors is an integer number (24402078).

Almost surely, 2^216727990 is an apocalyptic number.

216727990 is a deficient number, since it is larger than the sum of its proper divisors (173705258).

216727990 is a wasteful number, since it uses less digits than its factorization.

216727990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17943.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 216727990 is about 14721.6843465685. The cubic root of 216727990 is about 600.6733089573.

The spelling of 216727990 in words is "two hundred sixteen million, seven hundred twenty-seven thousand, nine hundred ninety".