212708 has 12 divisors (see below), whose sum is σ = 381612. Its totient is φ = 103680.

The previous prime is 212701. The next prime is 212777. The reversal of 212708 is 807212.

It can be written as a sum of positive squares in 2 ways, for example, as 123904 + 88804 = 352^2 + 298^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 212708.

It is not an unprimeable number, because it can be changed into a prime (212701) by changing a digit.

212708 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 485 + ... + 812.

It is an arithmetic number, because the mean of its divisors is an integer number (31801).

2²¹²⁷⁰⁸ is an apocalyptic number.

It is an amenable number.

212708 is a deficient number, since it is larger than the sum of its proper divisors (168904).

212708 is a wasteful number, since it uses less digits than its factorization.

212708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1342 (or 1340 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 212708 is about 461.2027753603. The cubic root of 212708 is about 59.6936234044.

The spelling of 212708 in words is "two hundred twelve thousand, seven hundred eight".