2190844 has 24 divisors (see below), whose sum is σ = 4002768. Its totient is φ = 1048320.

The previous prime is 2190829. The next prime is 2190857. The reversal of 2190844 is 4480912.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16659 + ... + 16789.

It is an arithmetic number, because the mean of its divisors is an integer number (166782).

2^2190844 is an apocalyptic number.

It is an amenable number.

2190844 is a deficient number, since it is larger than the sum of its proper divisors (1811924).

2190844 is a wasteful number, since it uses less digits than its factorization.

2190844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 2190844 is about 1480.1499923994. The cubic root of 2190844 is about 129.8784662983.

It can be divided in two parts, 21908 and 44, that added together give a cube (21952 = 28³).

The spelling of 2190844 in words is "two million, one hundred ninety thousand, eight hundred forty-four".