2128782 has 16 divisors (see below), whose sum is σ = 4281552. Its totient is φ = 705600.

The previous prime is 2128781. The next prime is 2128783. The reversal of 2128782 is 2878212.

It is a happy number.

2128782 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2128781) and next prime (2128783).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2128781) 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, 282 + ... + 2082.

It is an arithmetic number, because the mean of its divisors is an integer number (267597).

2^2128782 is an apocalyptic number.

2128782 is an abundant number, since it is smaller than the sum of its proper divisors (2152770).

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

2128782 is a wasteful number, since it uses less digits than its factorization.

2128782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2003.

The product of its digits is 3584, while the sum is 30.

The square root of 2128782 is about 1459.0346123379. The cubic root of 2128782 is about 128.6403055997.

The spelling of 2128782 in words is "two million, one hundred twenty-eight thousand, seven hundred eighty-two".