216850446 has 40 divisors (see below), whose sum is σ = 487932984. Its totient is φ = 71982000.

The previous prime is 216850427. The next prime is 216850471. The reversal of 216850446 is 644058612.

216850446 is a `hidden beast` number, since 2 + 168 + 50 + 446 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 216850446.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 37996 + ... + 43328.

Almost surely, 2^216850446 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216850446, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243966492).

216850446 is an abundant number, since it is smaller than the sum of its proper divisors (271082538).

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

216850446 is a wasteful number, since it uses less digits than its factorization.

216850446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5598 (or 5589 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 216850446 is about 14725.8427942172. The cubic root of 216850446 is about 600.7864187921.

The spelling of 216850446 in words is "two hundred sixteen million, eight hundred fifty thousand, four hundred forty-six".