2288865 has 16 divisors (see below), whose sum is σ = 3681216. Its totient is φ = 1214400.

The previous prime is 2288861. The next prime is 2288879. The reversal of 2288865 is 5688822.

2288865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2288865 - 2² = 2288861 is a prime.

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2288861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4735 + ... + 5195.

It is an arithmetic number, because the mean of its divisors is an integer number (230076).

2^2288865 is an apocalyptic number.

It is an amenable number.

2288865 is a deficient number, since it is larger than the sum of its proper divisors (1392351).

2288865 is a wasteful number, since it uses less digits than its factorization.

2288865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800.

The product of its digits is 61440, while the sum is 39.

The square root of 2288865 is about 1512.8995340075. The cubic root of 2288865 is about 131.7872491105.

The spelling of 2288865 in words is "two million, two hundred eighty-eight thousand, eight hundred sixty-five".