2288889 has 12 divisors (see below), whose sum is σ = 3322176. Its totient is φ = 1518552.

The previous prime is 2288887. The next prime is 2288893. The reversal of 2288889 is 9888822.

It is not a de Polignac number, because 2288889 - 2¹ = 2288887 is a prime.

It is an Ulam number.

It is a Curzon number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (2288887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1884 + ... + 2850.

It is an arithmetic number, because the mean of its divisors is an integer number (276848).

2^2288889 is an apocalyptic number.

It is an amenable number.

2288889 is a deficient number, since it is larger than the sum of its proper divisors (1033287).

2288889 is a wasteful number, since it uses less digits than its factorization.

2288889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236 (or 1233 counting only the distinct ones).

The product of its digits is 147456, while the sum is 45.

The square root of 2288889 is about 1512.9074657757. The cubic root of 2288889 is about 131.7877097293.

The spelling of 2288889 in words is "two million, two hundred eighty-eight thousand, eight hundred eighty-nine".