2189756 has 12 divisors (see below), whose sum is σ = 3875760. Its totient is φ = 1082400.

The previous prime is 2189743. The next prime is 2189767. The reversal of 2189756 is 6579812.

2189756 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2720 + ... + 3431.

It is an arithmetic number, because the mean of its divisors is an integer number (322980).

2^2189756 is an apocalyptic number.

It is an amenable number.

2189756 is a deficient number, since it is larger than the sum of its proper divisors (1686004).

2189756 is a wasteful number, since it uses less digits than its factorization.

2189756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6244 (or 6242 counting only the distinct ones).

The product of its digits is 30240, while the sum is 38.

The square root of 2189756 is about 1479.7824164383. The cubic root of 2189756 is about 129.8569629919.

The spelling of 2189756 in words is "two million, one hundred eighty-nine thousand, seven hundred fifty-six".