218056 has 16 divisors (see below), whose sum is σ = 414540. Its totient is φ = 107520.

The previous prime is 218047. The next prime is 218069. The reversal of 218056 is 650812.

It is a happy number.

218056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 217156 + 900 = 466^2 + 30^2 .

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, 636 + ... + 916.

2²¹⁸⁰⁵⁶ is an apocalyptic number.

It is an amenable number.

218056 is a deficient number, since it is larger than the sum of its proper divisors (196484).

218056 is a wasteful number, since it uses less digits than its factorization.

218056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384 (or 380 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 218056 is about 466.9646667576. The cubic root of 218056 is about 60.1897695297.

Adding to 218056 its reverse (650812), we get a palindrome (868868).

The spelling of 218056 in words is "two hundred eighteen thousand, fifty-six".