2808648 has 32 divisors (see below), whose sum is σ = 7802400. Its totient is φ = 936144.

The previous prime is 2808647. The next prime is 2808661. The reversal of 2808648 is 8468082.

2808648 is a `hidden beast` number, since 2 + 8 + 0 + 8 + 648 = 666.

2808648 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (2808647) 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, 6286 + ... + 6717.

It is an arithmetic number, because the mean of its divisors is an integer number (243825).

2^2808648 is an apocalyptic number.

It is an amenable number.

2808648 is an abundant number, since it is smaller than the sum of its proper divisors (4993752).

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

2808648 is a wasteful number, since it uses less digits than its factorization.

2808648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13018 (or 13008 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 2808648 is about 1675.9021451147. The cubic root of 2808648 is about 141.0909327425.

The spelling of 2808648 in words is "two million, eight hundred eight thousand, six hundred forty-eight".