2688944 has 20 divisors (see below), whose sum is σ = 5338200. Its totient is φ = 1311360.

The previous prime is 2688943. The next prime is 2688947. The reversal of 2688944 is 4498862.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2688943) 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, 1394 + ... + 2705.

It is an arithmetic number, because the mean of its divisors is an integer number (266910).

2^2688944 is an apocalyptic number.

It is an amenable number.

2688944 is a deficient number, since it is larger than the sum of its proper divisors (2649256).

2688944 is a wasteful number, since it uses less digits than its factorization.

2688944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4148 (or 4142 counting only the distinct ones).

The product of its digits is 110592, while the sum is 41.

The square root of 2688944 is about 1639.7999878034. The cubic root of 2688944 is about 139.0573405231.

The spelling of 2688944 in words is "two million, six hundred eighty-eight thousand, nine hundred forty-four".