216935286 has 16 divisors (see below), whose sum is σ = 434035200. Its totient is φ = 72284328.

The previous prime is 216935269. The next prime is 216935297. The reversal of 216935286 is 682539612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16275 + ... + 26433.

It is an arithmetic number, because the mean of its divisors is an integer number (27127200).

Almost surely, 2^216935286 is an apocalyptic number.

216935286 is an abundant number, since it is smaller than the sum of its proper divisors (217099914).

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

216935286 is a wasteful number, since it uses less digits than its factorization.

216935286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13723.

The product of its digits is 155520, while the sum is 42.

The square root of 216935286 is about 14728.7231625827. The cubic root of 216935286 is about 600.8647586110.

The spelling of 216935286 in words is "two hundred sixteen million, nine hundred thirty-five thousand, two hundred eighty-six".