2213968 has 10 divisors (see below), whose sum is σ = 4289594. Its totient is φ = 1106976.

The previous prime is 2213963. The next prime is 2213971. The reversal of 2213968 is 8693122.

It can be written as a sum of positive squares in only one way, i.e., 1617984 + 595984 = 1272^2 + 772^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2213963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69171 + ... + 69202.

2^2213968 is an apocalyptic number.

It is an amenable number.

2213968 is a deficient number, since it is larger than the sum of its proper divisors (2075626).

2213968 is a wasteful number, since it uses less digits than its factorization.

2213968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138381 (or 138375 counting only the distinct ones).

The product of its digits is 5184, while the sum is 31.

The square root of 2213968 is about 1487.9408590398. The cubic root of 2213968 is about 130.3338166414. Note that the first 3 decimals are identical.

The spelling of 2213968 in words is "two million, two hundred thirteen thousand, nine hundred sixty-eight".