2886891 has 32 divisors (see below), whose sum is σ = 4730880. Its totient is φ = 1530144.

The previous prime is 2886859. The next prime is 2886899. The reversal of 2886891 is 1986882.

2886891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2886891 - 2⁵ = 2886859 is a prime.

2886891 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2886899) 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 31 ways as a sum of consecutive naturals, for example, 20700 + ... + 20838.

It is an arithmetic number, because the mean of its divisors is an integer number (147840).

2^2886891 is an apocalyptic number.

2886891 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2886891 is a deficient number, since it is larger than the sum of its proper divisors (1843989).

2886891 is a wasteful number, since it uses less digits than its factorization.

2886891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215.

The product of its digits is 55296, while the sum is 42.

The square root of 2886891 is about 1699.0853421768. The cubic root of 2886891 is about 142.3891165724.

Subtracting from 2886891 its reverse (1986882), we obtain a palindrome (900009).

The spelling of 2886891 in words is "two million, eight hundred eighty-six thousand, eight hundred ninety-one".