2688940688 has 40 divisors (see below), whose sum is σ = 6080777472. Its totient is φ = 1127881728.

The previous prime is 2688940669. The next prime is 2688940691. The reversal of 2688940688 is 8860498862.

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 7 ways as a sum of consecutive naturals, for example, 250145 + ... + 260672.

Almost surely, 2^2688940688 is an apocalyptic number.

2688940688 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2688940688 is an abundant number, since it is smaller than the sum of its proper divisors (3391836784).

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

2688940688 is a wasteful number, since it uses less digits than its factorization.

2688940688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510879 (or 510873 counting only the distinct ones).

The product of its (nonzero) digits is 10616832, while the sum is 59.

The square root of 2688940688 is about 51854.9967505543. The cubic root of 2688940688 is about 1390.5728343032.

The spelling of 2688940688 in words is "two billion, six hundred eighty-eight million, nine hundred forty thousand, six hundred eighty-eight".