216516850 has 24 divisors (see below), whose sum is σ = 439333488. Its totient is φ = 78733200.

The previous prime is 216516847. The next prime is 216516869. The reversal of 216516850 is 58615612.

It is a happy number.

216516850 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 196284 + ... + 197383.

It is an arithmetic number, because the mean of its divisors is an integer number (18305562).

Almost surely, 2^216516850 is an apocalyptic number.

216516850 is an abundant number, since it is smaller than the sum of its proper divisors (222816638).

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

216516850 is a wasteful number, since it uses less digits than its factorization.

216516850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393690 (or 393685 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 216516850 is about 14714.5115447303. The cubic root of 216516850 is about 600.4781836143.

The spelling of 216516850 in words is "two hundred sixteen million, five hundred sixteen thousand, eight hundred fifty".