216834 has 16 divisors (see below), whose sum is σ = 440640. Its totient is φ = 71120.

The previous prime is 216829. The next prime is 216841. The reversal of 216834 is 438612.

It is a happy 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, 172 + ... + 680.

It is an arithmetic number, because the mean of its divisors is an integer number (27540).

2²¹⁶⁸³⁴ is an apocalyptic number.

216834 is an abundant number, since it is smaller than the sum of its proper divisors (223806).

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

216834 is a wasteful number, since it uses less digits than its factorization.

216834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585.

The product of its digits is 1152, while the sum is 24.

The square root of 216834 is about 465.6543782678. The cubic root of 216834 is about 60.0771230470.

It can be divided in two parts, 2 and 16834, that added together give a triangular number (16836 = T₁₈₃).

The spelling of 216834 in words is "two hundred sixteen thousand, eight hundred thirty-four".