212136808 has 16 divisors (see below), whose sum is σ = 428353380. Its totient is φ = 97909248.

The previous prime is 212136787. The next prime is 212136811. The reversal of 212136808 is 808631212.

212136808 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 183385764 + 28751044 = 13542^2 + 5362^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 212136808.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1019785 + ... + 1019992.

Almost surely, 2^212136808 is an apocalyptic number.

It is an amenable number.

212136808 is an abundant number, since it is smaller than the sum of its proper divisors (216216572).

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

212136808 is a wasteful number, since it uses less digits than its factorization.

212136808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2039796 (or 2039792 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 212136808 is about 14564.9170268835. The cubic root of 212136808 is about 596.4014306837.

The spelling of 212136808 in words is "two hundred twelve million, one hundred thirty-six thousand, eight hundred eight".