212163776 has 56 divisors (see below), whose sum is σ = 479291904. Its totient is φ = 92238080.

The previous prime is 212163751. The next prime is 212163779. The reversal of 212163776 is 677361212.

It is not an unprimeable number, because it can be changed into a prime (212163779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9641 + ... + 22743.

It is an arithmetic number, because the mean of its divisors is an integer number (8558784).

Almost surely, 2^212163776 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212163776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239645952).

212163776 is an abundant number, since it is smaller than the sum of its proper divisors (267128128).

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

212163776 is a wasteful number, since it uses less digits than its factorization.

212163776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13149 (or 13139 counting only the distinct ones).

The product of its digits is 21168, while the sum is 35.

The square root of 212163776 is about 14565.8427837184. The cubic root of 212163776 is about 596.4267022249.

The spelling of 212163776 in words is "two hundred twelve million, one hundred sixty-three thousand, seven hundred seventy-six".