2688291 has 24 divisors (see below), whose sum is σ = 4160000. Its totient is φ = 1667952.

The previous prime is 2688239. The next prime is 2688299. The reversal of 2688291 is 1928862.

It is not a de Polignac number, because 2688291 - 2⁹ = 2687779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2688299) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13410 + ... + 13608.

2^2688291 is an apocalyptic number.

2688291 is a deficient number, since it is larger than the sum of its proper divisors (1471709).

2688291 is a wasteful number, since it uses less digits than its factorization.

2688291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303 (or 300 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 2688291 is about 1639.6008660647. The cubic root of 2688291 is about 139.0460830933.

The spelling of 2688291 in words is "two million, six hundred eighty-eight thousand, two hundred ninety-one".