212438776 has 64 divisors (see below), whose sum is σ = 445927680. Its totient is φ = 94068480.

The previous prime is 212438773. The next prime is 212438777. The reversal of 212438776 is 677834212.

212438776 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212438773) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 807621 + ... + 807883.

It is an arithmetic number, because the mean of its divisors is an integer number (6967620).

Almost surely, 2^212438776 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 212438776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222963840).

212438776 is an abundant number, since it is smaller than the sum of its proper divisors (233488904).

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

212438776 is a wasteful number, since it uses less digits than its factorization.

212438776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484 (or 480 counting only the distinct ones).

The product of its digits is 112896, while the sum is 40.

The square root of 212438776 is about 14575.2796199593. The cubic root of 212438776 is about 596.6842808001.

The spelling of 212438776 in words is "two hundred twelve million, four hundred thirty-eight thousand, seven hundred seventy-six".