2212856 has 32 divisors (see below), whose sum is σ = 4490640. Its totient is φ = 1018368.

The previous prime is 2212831. The next prime is 2212871. The reversal of 2212856 is 6582122.

2212856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7055 + ... + 7361.

2^2212856 is an apocalyptic number.

It is an amenable number.

2212856 is an abundant number, since it is smaller than the sum of its proper divisors (2277784).

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

2212856 is a wasteful number, since it uses less digits than its factorization.

2212856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383 (or 379 counting only the distinct ones).

The product of its digits is 1920, while the sum is 26.

The square root of 2212856 is about 1487.5671413419. The cubic root of 2212856 is about 130.3119922555.

Adding to 2212856 its reverse (6582122), we get a palindrome (8794978).

The spelling of 2212856 in words is "two million, two hundred twelve thousand, eight hundred fifty-six".