216984134 has 8 divisors (see below), whose sum is σ = 325931040. Its totient is φ = 108340456.

The previous prime is 216984127. The next prime is 216984191. The reversal of 216984134 is 431489612.

216984134 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×216984134² = 94164228815459912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74009 + ... + 76884.

It is an arithmetic number, because the mean of its divisors is an integer number (40741380).

Almost surely, 2^216984134 is an apocalyptic number.

216984134 is a deficient number, since it is larger than the sum of its proper divisors (108946906).

216984134 is a wasteful number, since it uses less digits than its factorization.

216984134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151614.

The product of its digits is 41472, while the sum is 38.

The square root of 216984134 is about 14730.3813256820. The cubic root of 216984134 is about 600.9098547616.

The spelling of 216984134 in words is "two hundred sixteen million, nine hundred eighty-four thousand, one hundred thirty-four".