212988 has 12 divisors (see below), whose sum is σ = 497000. Its totient is φ = 70992.

The previous prime is 212987. The next prime is 212999. The reversal of 212988 is 889212.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nialpdrome in base 12.

It is a zygodrome in base 2.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 212988.

It is not an unprimeable number, because it can be changed into a prime (212981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8863 + ... + 8886.

2²¹²⁹⁸⁸ is an apocalyptic number.

It is an amenable number.

212988 is an abundant number, since it is smaller than the sum of its proper divisors (284012).

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

212988 is a wasteful number, since it uses less digits than its factorization.

212988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17756 (or 17754 counting only the distinct ones).

The product of its digits is 2304, while the sum is 30.

The square root of 212988 is about 461.5062296438. The cubic root of 212988 is about 59.7198046575.

The spelling of 212988 in words is "two hundred twelve thousand, nine hundred eighty-eight".