2100944 has 20 divisors (see below), whose sum is σ = 4285440. Its totient is φ = 995040.

The previous prime is 2100941. The next prime is 2100953. The reversal of 2100944 is 4490012.

It is a super-2 number, since 2×2100944² = 8827931382272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100941) 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 in 3 ways as a sum of consecutive naturals, for example, 3152 + ... + 3759.

It is an arithmetic number, because the mean of its divisors is an integer number (214272).

2^2100944 is an apocalyptic number.

It is an amenable number.

2100944 is an abundant number, since it is smaller than the sum of its proper divisors (2184496).

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

2100944 is a wasteful number, since it uses less digits than its factorization.

2100944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6938 (or 6932 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 2100944 is about 1449.4633489675. The cubic root of 2100944 is about 128.0771019851.

Adding to 2100944 its reverse (4490012), we get a palindrome (6590956).

The spelling of 2100944 in words is "two million, one hundred thousand, nine hundred forty-four".