489128 has 8 divisors (see below), whose sum is σ = 917130. Its totient is φ = 244560.

The previous prime is 489127. The next prime is 489133. The reversal of 489128 is 821984.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 293764 + 195364 = 542^2 + 442^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 489094 and 489103.

It is not an unprimeable number, because it can be changed into a prime (489127) 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 as a sum of consecutive naturals, namely, 30563 + ... + 30578.

2⁴⁸⁹¹²⁸ is an apocalyptic number.

It is an amenable number.

489128 is a deficient number, since it is larger than the sum of its proper divisors (428002).

489128 is a wasteful number, since it uses less digits than its factorization.

489128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61147 (or 61143 counting only the distinct ones).

The product of its digits is 4608, while the sum is 32.

The square root of 489128 is about 699.3768655024. The cubic root of 489128 is about 78.7905577596.

The spelling of 489128 in words is "four hundred eighty-nine thousand, one hundred twenty-eight".