212776914 has 48 divisors (see below), whose sum is σ = 496551168. Its totient is φ = 60607008.

The previous prime is 212776909. The next prime is 212776931. The reversal of 212776914 is 419677212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115807 + ... + 117629.

It is an arithmetic number, because the mean of its divisors is an integer number (10344816).

Almost surely, 2^212776914 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212776914, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248275584).

212776914 is an abundant number, since it is smaller than the sum of its proper divisors (283774254).

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

212776914 is a wasteful number, since it uses less digits than its factorization.

212776914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2239 (or 2232 counting only the distinct ones).

The product of its digits is 42336, while the sum is 39.

The square root of 212776914 is about 14586.8747166759. The cubic root of 212776914 is about 597.0006930232. Note that the first 3 decimals are identical.

The spelling of 212776914 in words is "two hundred twelve million, seven hundred seventy-six thousand, nine hundred fourteen".