212176216 has 16 divisors (see below), whose sum is σ = 454663440. Its totient is φ = 90932640.

The previous prime is 212176207. The next prime is 212176229. The reversal of 212176216 is 612671212.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1894375 + ... + 1894486.

It is an arithmetic number, because the mean of its divisors is an integer number (28416465).

Almost surely, 2^212176216 is an apocalyptic number.

It is an amenable number.

212176216 is an abundant number, since it is smaller than the sum of its proper divisors (242487224).

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

212176216 is a wasteful number, since it uses less digits than its factorization.

212176216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3788874 (or 3788870 counting only the distinct ones).

The product of its digits is 2016, while the sum is 28.

The square root of 212176216 is about 14566.2698038997. The cubic root of 212176216 is about 596.4383589480.

The spelling of 212176216 in words is "two hundred twelve million, one hundred seventy-six thousand, two hundred sixteen".