216676212 has 12 divisors (see below), whose sum is σ = 505577856. Its totient is φ = 72225400.

The previous prime is 216676193. The next prime is 216676219. The reversal of 216676212 is 212676612.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216676219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9028164 + ... + 9028187.

It is an arithmetic number, because the mean of its divisors is an integer number (42131488).

Almost surely, 2^216676212 is an apocalyptic number.

It is an amenable number.

216676212 is an abundant number, since it is smaller than the sum of its proper divisors (288901644).

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

216676212 is a wasteful number, since it uses less digits than its factorization.

216676212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18056358 (or 18056356 counting only the distinct ones).

The product of its digits is 12096, while the sum is 33.

The square root of 216676212 is about 14719.9256791602. The cubic root of 216676212 is about 600.6254699745.

The spelling of 216676212 in words is "two hundred sixteen million, six hundred seventy-six thousand, two hundred twelve".