428589 has 12 divisors (see below), whose sum is σ = 707616. Its totient is φ = 244872.

The previous prime is 428579. The next prime is 428629. The reversal of 428589 is 985824.

It is not a de Polignac number, because 428589 - 2⁵ = 428557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428509) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3339 + ... + 3464.

It is an arithmetic number, because the mean of its divisors is an integer number (58968).

2⁴²⁸⁵⁸⁹ is an apocalyptic number.

It is an amenable number.

428589 is a deficient number, since it is larger than the sum of its proper divisors (279027).

428589 is a wasteful number, since it uses less digits than its factorization.

428589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6816 (or 6813 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 428589 is about 654.6670909707. The cubic root of 428589 is about 75.3957744937.

The spelling of 428589 in words is "four hundred twenty-eight thousand, five hundred eighty-nine".