2213944 has 32 divisors (see below), whose sum is σ = 4475520. Its totient is φ = 1022976.

The previous prime is 2213933. The next prime is 2213963. The reversal of 2213944 is 4493122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9817 + ... + 10039.

It is an arithmetic number, because the mean of its divisors is an integer number (139860).

2^2213944 is an apocalyptic number.

It is an amenable number.

2213944 is an abundant number, since it is smaller than the sum of its proper divisors (2261576).

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

2213944 is a wasteful number, since it uses less digits than its factorization.

2213944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319 (or 315 counting only the distinct ones).

The product of its digits is 1728, while the sum is 25.

The square root of 2213944 is about 1487.9327941812. The cubic root of 2213944 is about 130.3333456886. Note that the first 4 decimals are identical.

The spelling of 2213944 in words is "two million, two hundred thirteen thousand, nine hundred forty-four".