216882 has 12 divisors (see below), whose sum is σ = 469950. Its totient is φ = 72288.

The previous prime is 216877. The next prime is 216899. The reversal of 216882 is 288612.

It can be written as a sum of positive squares in only one way, i.e., 168921 + 47961 = 411^2 + 219^2 .

It is an unprimeable number.

216882 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6007 + ... + 6042.

2²¹⁶⁸⁸² is an apocalyptic number.

216882 is an abundant number, since it is smaller than the sum of its proper divisors (253068).

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

216882 is a wasteful number, since it uses less digits than its factorization.

216882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12057 (or 12054 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 216882 is about 465.7059157881. The cubic root of 216882 is about 60.0815557607.

It can be divided in two parts, 21 and 6882, that added together give a triangular number (6903 = T₁₁₇).

The spelling of 216882 in words is "two hundred sixteen thousand, eight hundred eighty-two".