216282 has 32 divisors (see below), whose sum is σ = 492480. Its totient is φ = 62720.

The previous prime is 216263. The next prime is 216289. The reversal of 216282 is 282612.

216282 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×216282³ = 30351655589933304, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (216289) by changing a digit.

216282 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 15 ways as a sum of consecutive naturals, for example, 1858 + ... + 1970.

It is an arithmetic number, because the mean of its divisors is an integer number (15390).

2²¹⁶²⁸² is an apocalyptic number.

216282 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 216282, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246240).

216282 is an abundant number, since it is smaller than the sum of its proper divisors (276198).

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

216282 is a wasteful number, since it uses less digits than its factorization.

216282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158.

The product of its digits is 384, while the sum is 21.

The square root of 216282 is about 465.0612862839. The cubic root of 216282 is about 60.0260997562.

Adding to 216282 its reverse (282612), we get a palindrome (498894).

The spelling of 216282 in words is "two hundred sixteen thousand, two hundred eighty-two".