2212456 has 8 divisors (see below), whose sum is σ = 4148370. Its totient is φ = 1106224.

The previous prime is 2212453. The next prime is 2212471. The reversal of 2212456 is 6542122.

It can be written as a sum of positive squares in only one way, i.e., 1768900 + 443556 = 1330^2 + 666^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (2212453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138271 + ... + 138286.

2^2212456 is an apocalyptic number.

It is an amenable number.

2212456 is a deficient number, since it is larger than the sum of its proper divisors (1935914).

2212456 is a wasteful number, since it uses less digits than its factorization.

2212456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276563 (or 276559 counting only the distinct ones).

The product of its digits is 960, while the sum is 22.

The square root of 2212456 is about 1487.4326875526. The cubic root of 2212456 is about 130.3041399690.

Adding to 2212456 its reverse (6542122), we get a palindrome (8754578).

The spelling of 2212456 in words is "two million, two hundred twelve thousand, four hundred fifty-six".