1128589 has 8 divisors (see below), whose sum is σ = 1407168. Its totient is φ = 879360.

The previous prime is 1128583. The next prime is 1128599. The reversal of 1128589 is 9858211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1128589 - 2⁵ = 1128557 is a prime.

1128589 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7252 + ... + 7405.

It is an arithmetic number, because the mean of its divisors is an integer number (175896).

2^1128589 is an apocalyptic number.

It is an amenable number.

1128589 is a deficient number, since it is larger than the sum of its proper divisors (278579).

1128589 is a wasteful number, since it uses less digits than its factorization.

1128589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14675.

The product of its digits is 5760, while the sum is 34.

The square root of 1128589 is about 1062.3506953921. The cubic root of 1128589 is about 104.1146725763.

The spelling of 1128589 in words is "one million, one hundred twenty-eight thousand, five hundred eighty-nine".