2891008 has 36 divisors (see below), whose sum is σ = 6033888. Its totient is φ = 1379840.

The previous prime is 2890999. The next prime is 2891011. The reversal of 2891008 is 8001982.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5643 + ... + 6133.

It is an arithmetic number, because the mean of its divisors is an integer number (167608).

2^2891008 is an apocalyptic number.

2891008 is the 982-nd octagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2891008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3016944).

2891008 is an abundant number, since it is smaller than the sum of its proper divisors (3142880).

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

2891008 is an equidigital number, since it uses as much as digits as its factorization.

2891008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530 (or 516 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 2891008 is about 1700.2964447413. The cubic root of 2891008 is about 142.4567715393.

The spelling of 2891008 in words is "two million, eight hundred ninety-one thousand, eight".