2688278 has 12 divisors (see below), whose sum is σ = 4284492. Its totient is φ = 1264800.

The previous prime is 2688239. The next prime is 2688299. The reversal of 2688278 is 8728862.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1748 + ... + 2903.

It is an arithmetic number, because the mean of its divisors is an integer number (357041).

2^2688278 is an apocalyptic number.

2688278 is a deficient number, since it is larger than the sum of its proper divisors (1596214).

2688278 is a wasteful number, since it uses less digits than its factorization.

2688278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4687 (or 4670 counting only the distinct ones).

The product of its digits is 86016, while the sum is 41.

The square root of 2688278 is about 1639.5969016804. The cubic root of 2688278 is about 139.0458589606.

The spelling of 2688278 in words is "two million, six hundred eighty-eight thousand, two hundred seventy-eight".