212252706 has 12 divisors (see below), whose sum is σ = 459880902. Its totient is φ = 70750896.

The previous prime is 212252699. The next prime is 212252731. The reversal of 212252706 is 607252212.

It can be written as a sum of positive squares in only one way, i.e., 170067681 + 42185025 = 13041^2 + 6495^2 .

It is a super-2 number, since 2×212252706² = 90102422408644872, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212252706.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5895891 + ... + 5895926.

Almost surely, 2^212252706 is an apocalyptic number.

212252706 is an abundant number, since it is smaller than the sum of its proper divisors (247628196).

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

212252706 is a wasteful number, since it uses less digits than its factorization.

212252706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11791825 (or 11791822 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 212252706 is about 14568.8951537170. The cubic root of 212252706 is about 596.5100227908.

The spelling of 212252706 in words is "two hundred twelve million, two hundred fifty-two thousand, seven hundred six".