2688788 has 12 divisors (see below), whose sum is σ = 4982292. Its totient is φ = 1265280.

The previous prime is 2688787. The next prime is 2688797. The reversal of 2688788 is 8878862.

It can be written as a sum of positive squares in 2 ways, for example, as 806404 + 1882384 = 898^2 + 1372^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2688781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19703 + ... + 19838.

It is an arithmetic number, because the mean of its divisors is an integer number (415191).

2^2688788 is an apocalyptic number.

It is an amenable number.

2688788 is a deficient number, since it is larger than the sum of its proper divisors (2293504).

2688788 is a wasteful number, since it uses less digits than its factorization.

2688788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39562 (or 39560 counting only the distinct ones).

The product of its digits is 344064, while the sum is 47.

The square root of 2688788 is about 1639.7524203367. The cubic root of 2688788 is about 139.0546513182.

The spelling of 2688788 in words is "two million, six hundred eighty-eight thousand, seven hundred eighty-eight".