2112890 has 16 divisors (see below), whose sum is σ = 4096008. Its totient is φ = 780096.

The previous prime is 2112871. The next prime is 2112893. The reversal of 2112890 is 982112.

2112890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1515361 + 597529 = 1231^2 + 773^2 .

It is not an unprimeable number, because it can be changed into a prime (2112893) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7997 + ... + 8256.

2^2112890 is an apocalyptic number.

2112890 is a deficient number, since it is larger than the sum of its proper divisors (1983118).

2112890 is a wasteful number, since it uses less digits than its factorization.

2112890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16273.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 2112890 is about 1453.5783432619. The cubic root of 2112890 is about 128.3193927999.

The spelling of 2112890 in words is "two million, one hundred twelve thousand, eight hundred ninety".