2806688 has 24 divisors (see below), whose sum is σ = 5574240. Its totient is φ = 1391040.

The previous prime is 2806679. The next prime is 2806691. The reversal of 2806688 is 8866082.

2806688 is nontrivially palindromic in base 7.

It is a super-3 number, since 3×2806688³ = 66329033356918358016, which contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4133 + ... + 4763.

It is an arithmetic number, because the mean of its divisors is an integer number (232260).

2^2806688 is an apocalyptic number.

It is an amenable number.

2806688 is a deficient number, since it is larger than the sum of its proper divisors (2767552).

2806688 is a wasteful number, since it uses less digits than its factorization.

2806688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780 (or 772 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 2806688 is about 1675.3172833825. The cubic root of 2806688 is about 141.0581052540.

The spelling of 2806688 in words is "two million, eight hundred six thousand, six hundred eighty-eight".