216180834 has 16 divisors (see below), whose sum is σ = 432727680. Its totient is φ = 71999280.

The previous prime is 216180827. The next prime is 216180847. The reversal of 216180834 is 438081612.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 216180795 and 216180804.

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, 7249 + ... + 22020.

It is an arithmetic number, because the mean of its divisors is an integer number (27045480).

Almost surely, 2^216180834 is an apocalyptic number.

216180834 is an abundant number, since it is smaller than the sum of its proper divisors (216546846).

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

216180834 is a wasteful number, since it uses less digits than its factorization.

216180834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30505.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 216180834 is about 14703.0892672254. The cubic root of 216180834 is about 600.1673921843.

The spelling of 216180834 in words is "two hundred sixteen million, one hundred eighty thousand, eight hundred thirty-four".