212884 has 12 divisors (see below), whose sum is σ = 425824. Its totient is φ = 91224.

The previous prime is 212881. The next prime is 212897. The reversal of 212884 is 488212.

212884 = 32² + 33² + ... + 87².

212884 is an admirable number.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3774 + ... + 3829.

2²¹²⁸⁸⁴ is an apocalyptic number.

It is an amenable number.

212884 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.

212884 is a wasteful number, since it uses less digits than its factorization.

212884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7614 (or 7612 counting only the distinct ones).

The product of its digits is 1024, while the sum is 25.

The square root of 212884 is about 461.3935413505. The cubic root of 212884 is about 59.7100828721.

The spelling of 212884 in words is "two hundred twelve thousand, eight hundred eighty-four".