2212864 has 22 divisors (see below), whose sum is σ = 4425614. Its totient is φ = 1105920.

The previous prime is 2212831. The next prime is 2212871. The reversal of 2212864 is 4682122.

It is a happy number.

2212864 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1982464 + 230400 = 1408^2 + 480^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57 + ... + 2104.

2^2212864 is an apocalyptic number.

It is an amenable number.

2212864 is a deficient number, since it is larger than the sum of its proper divisors (2212750).

2212864 is an equidigital number, since it uses as much as digits as its factorization.

2212864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2181 (or 2163 counting only the distinct ones).

The product of its digits is 1536, while the sum is 25.

The square root of 2212864 is about 1487.5698302937. The cubic root of 2212864 is about 130.3121492916.

Adding to 2212864 its reverse (4682122), we get a palindrome (6894986).

The spelling of 2212864 in words is "two million, two hundred twelve thousand, eight hundred sixty-four".