212286 has 8 divisors (see below), whose sum is σ = 424584. Its totient is φ = 70760.

The previous prime is 212281. The next prime is 212293. The reversal of 212286 is 682212.

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

212286 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212281) by changing a digit.

212286 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 3 ways as a sum of consecutive naturals, for example, 17685 + ... + 17696.

It is an arithmetic number, because the mean of its divisors is an integer number (53073).

2²¹²²⁸⁶ is an apocalyptic number.

212286 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

212286 is a wasteful number, since it uses less digits than its factorization.

212286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35386.

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

The square root of 212286 is about 460.7450488068. The cubic root of 212286 is about 59.6541210719.

Adding to 212286 its reverse (682212), we get a palindrome (894498).

The spelling of 212286 in words is "two hundred twelve thousand, two hundred eighty-six".