216716850 has 384 divisors, whose sum is σ = 771379200. Its totient is φ = 43545600.

The previous prime is 216716791. The next prime is 216716887. The reversal of 216716850 is 58617612.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 3052315 + ... + 3052385.

It is an arithmetic number, because the mean of its divisors is an integer number (2008800).

Almost surely, 2^216716850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216716850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (385689600).

216716850 is an abundant number, since it is smaller than the sum of its proper divisors (554662350).

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

216716850 is a wasteful number, since it uses less digits than its factorization.

216716850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 216716850 is about 14721.3059882607. The cubic root of 216716850 is about 600.6630170774.

The spelling of 216716850 in words is "two hundred sixteen million, seven hundred sixteen thousand, eight hundred fifty".