216934 has 8 divisors (see below), whose sum is σ = 329760. Its totient is φ = 107016.

The previous prime is 216919. The next prime is 216947. The reversal of 216934 is 439612.

216934 is nontrivially palindromic in base 12.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 216899 and 216908.

It is a congruent number.

It is an unprimeable number.

216934 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 529 + ... + 844.

It is an arithmetic number, because the mean of its divisors is an integer number (41220).

2²¹⁶⁹³⁴ is an apocalyptic number.

216934 is a deficient number, since it is larger than the sum of its proper divisors (112826).

216934 is a wasteful number, since it uses less digits than its factorization.

216934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1454.

The product of its digits is 1296, while the sum is 25.

The square root of 216934 is about 465.7617416663. The cubic root of 216934 is about 60.0863571293.

The spelling of 216934 in words is "two hundred sixteen thousand, nine hundred thirty-four".