212067216 has 30 divisors (see below), whose sum is σ = 593494070. Its totient is φ = 70689024.

The previous prime is 212067179. The next prime is 212067217. The reversal of 212067216 is 612760212.

It can be written as a sum of positive squares in only one way, i.e., 176783616 + 35283600 = 13296^2 + 5940^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 212067216.

It is not an unprimeable number, because it can be changed into a prime (212067217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 736201 + ... + 736488.

Almost surely, 2^212067216 is an apocalyptic number.

It is an amenable number.

212067216 is an abundant number, since it is smaller than the sum of its proper divisors (381426854).

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

212067216 is a wasteful number, since it uses less digits than its factorization.

212067216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1472703 (or 1472694 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 212067216 is about 14562.5278025486. The cubic root of 212067216 is about 596.3362065670.

The spelling of 212067216 in words is "two hundred twelve million, sixty-seven thousand, two hundred sixteen".