2128688 has 20 divisors (see below), whose sum is σ = 4149288. Its totient is φ = 1057920.

The previous prime is 2128669. The next prime is 2128697. The reversal of 2128688 is 8868212.

2128688 is nontrivially palindromic in base 7.

It is a zygodrome in base 3.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3443 + ... + 4013.

2^2128688 is an apocalyptic number.

It is an amenable number.

2128688 is a deficient number, since it is larger than the sum of its proper divisors (2020600).

2128688 is a wasteful number, since it uses less digits than its factorization.

2128688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812 (or 806 counting only the distinct ones).

The product of its digits is 12288, while the sum is 35.

The square root of 2128688 is about 1459.0023989014. The cubic root of 2128688 is about 128.6384121278.

The spelling of 2128688 in words is "two million, one hundred twenty-eight thousand, six hundred eighty-eight".