212166708 has 48 divisors (see below), whose sum is σ = 537384960. Its totient is φ = 64761984.

The previous prime is 212166707. The next prime is 212166709. The reversal of 212166708 is 807661212.

It is an interprime number because it is at equal distance from previous prime (212166707) and next prime (212166709).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212166701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14458 + ... + 25166.

It is an arithmetic number, because the mean of its divisors is an integer number (11195520).

Almost surely, 2^212166708 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212166708, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268692480).

212166708 is an abundant number, since it is smaller than the sum of its proper divisors (325218252).

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

212166708 is a wasteful number, since it uses less digits than its factorization.

212166708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10856 (or 10854 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 212166708 is about 14565.9434297954. The cubic root of 212166708 is about 596.4294496544.

The spelling of 212166708 in words is "two hundred twelve million, one hundred sixty-six thousand, seven hundred eight".