2091128 has 16 divisors (see below), whose sum is σ = 4222680. Its totient is φ = 965088.

The previous prime is 2091097. The next prime is 2091139. The reversal of 2091128 is 8211902.

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 3 ways as a sum of consecutive naturals, for example, 9950 + ... + 10157.

2^2091128 is an apocalyptic number.

It is an amenable number.

2091128 is an abundant number, since it is smaller than the sum of its proper divisors (2131552).

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

2091128 is a wasteful number, since it uses less digits than its factorization.

2091128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20126 (or 20122 counting only the distinct ones).

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

The square root of 2091128 is about 1446.0733038128. The cubic root of 2091128 is about 127.8773238701.

The spelling of 2091128 in words is "two million, ninety-one thousand, one hundred twenty-eight".