212306164 has 12 divisors (see below), whose sum is σ = 424612384. Its totient is φ = 90988344.

The previous prime is 212306153. The next prime is 212306173. The reversal of 212306164 is 461603212.

212306164 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

212306164 is an admirable number.

It is a congruent number.

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, 3791154 + ... + 3791209.

Almost surely, 2^212306164 is an apocalyptic number.

It is an amenable number.

212306164 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

212306164 is a wasteful number, since it uses less digits than its factorization.

212306164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7582374 (or 7582372 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 212306164 is about 14570.7297003273. The cubic root of 212306164 is about 596.5600976232.

Adding to 212306164 its reverse (461603212), we get a palindrome (673909376).

The spelling of 212306164 in words is "two hundred twelve million, three hundred six thousand, one hundred sixty-four".