2808894 has 48 divisors (see below), whose sum is σ = 6377616. Its totient is φ = 823680.

The previous prime is 2808881. The next prime is 2808901. The reversal of 2808894 is 4988082.

2808894 = 117² + 118² + ... + 215².

It is a happy number.

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 23 ways as a sum of consecutive naturals, for example, 38442 + ... + 38514.

It is an arithmetic number, because the mean of its divisors is an integer number (132867).

2^2808894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2808894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3188808).

2808894 is an abundant number, since it is smaller than the sum of its proper divisors (3568722).

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

2808894 is a wasteful number, since it uses less digits than its factorization.

2808894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 2808894 is about 1675.9755368143. The cubic root of 2808894 is about 141.0950518485.

It can be divided in two parts, 28088 and 94, that added together give a palindrome (28182).

The spelling of 2808894 in words is "two million, eight hundred eight thousand, eight hundred ninety-four".