2688790 has 48 divisors (see below), whose sum is σ = 5507568. Its totient is φ = 943488.

The previous prime is 2688787. The next prime is 2688797. The reversal of 2688790 is 978862.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2688797) 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, 62509 + ... + 62551.

It is an arithmetic number, because the mean of its divisors is an integer number (114741).

2^2688790 is an apocalyptic number.

2688790 is an abundant number, since it is smaller than the sum of its proper divisors (2818778).

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

2688790 is a wasteful number, since it uses less digits than its factorization.

2688790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 2688790 is about 1639.7530301847. The cubic root of 2688790 is about 139.0546857958.

The spelling of 2688790 in words is "two million, six hundred eighty-eight thousand, seven hundred ninety".