2688044 has 24 divisors (see below), whose sum is σ = 5011440. Its totient is φ = 1257984.

The previous prime is 2688019. The next prime is 2688053. The reversal of 2688044 is 4408862.

It is a d-powerful number, because it can be written as 2¹⁹ + 6² + 8 + 8⁷ + 0 + 4⁵ + 4⁸ .

It is a self number, because there is not a number n which added to its sum of digits gives 2688044.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8432 + ... + 8744.

It is an arithmetic number, because the mean of its divisors is an integer number (208810).

2^2688044 is an apocalyptic number.

It is an amenable number.

2688044 is a deficient number, since it is larger than the sum of its proper divisors (2323396).

2688044 is a wasteful number, since it uses less digits than its factorization.

2688044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449 (or 447 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 2688044 is about 1639.5255411246. The cubic root of 2688044 is about 139.0418244479.

The spelling of 2688044 in words is "two million, six hundred eighty-eight thousand, forty-four".