212316456 has 128 divisors (see below), whose sum is σ = 604454400. Its totient is φ = 61582080.

The previous prime is 212316389. The next prime is 212316479. The reversal of 212316456 is 654613212.

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 31 ways as a sum of consecutive naturals, for example, 669610 + ... + 669926.

It is an arithmetic number, because the mean of its divisors is an integer number (4722300).

Almost surely, 2^212316456 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 212316456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302227200).

212316456 is an abundant number, since it is smaller than the sum of its proper divisors (392137944).

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

212316456 is a wasteful number, since it uses less digits than its factorization.

212316456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439 (or 435 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 212316456 is about 14571.0828698488. The cubic root of 212316456 is about 596.5697373140.

Adding to 212316456 its reverse (654613212), we get a palindrome (866929668).

The spelling of 212316456 in words is "two hundred twelve million, three hundred sixteen thousand, four hundred fifty-six".