216850782 has 16 divisors (see below), whose sum is σ = 435090960. Its totient is φ = 72052032.

The previous prime is 216850769. The next prime is 216850817. The reversal of 216850782 is 287058612.

It is a self number, because there is not a number n which added to its sum of digits gives 216850782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55857 + ... + 59612.

It is an arithmetic number, because the mean of its divisors is an integer number (27193185).

Almost surely, 2^216850782 is an apocalyptic number.

216850782 is an abundant number, since it is smaller than the sum of its proper divisors (218240178).

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

216850782 is a wasteful number, since it uses less digits than its factorization.

216850782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115787.

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 216850782 is about 14725.8542027279. The cubic root of 216850782 is about 600.7867290891.

The spelling of 216850782 in words is "two hundred sixteen million, eight hundred fifty thousand, seven hundred eighty-two".