2100844 has 12 divisors (see below), whose sum is σ = 3692304. Its totient is φ = 1045904.

The previous prime is 2100841. The next prime is 2100859. The reversal of 2100844 is 4480012.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2100841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54 + ... + 2050.

It is an arithmetic number, because the mean of its divisors is an integer number (307692).

2^2100844 is an apocalyptic number.

It is an amenable number.

2100844 is a deficient number, since it is larger than the sum of its proper divisors (1591460).

2100844 is a wasteful number, since it uses less digits than its factorization.

2100844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2264 (or 2262 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 2100844 is about 1449.4288530314. The cubic root of 2100844 is about 128.0750698964.

Adding to 2100844 its reverse (4480012), we get a palindrome (6580856).

The spelling of 2100844 in words is "two million, one hundred thousand, eight hundred forty-four".