489728658 has 8 divisors (see below), whose sum is σ = 979457328. Its totient is φ = 163242884.

The previous prime is 489728647. The next prime is 489728683. The reversal of 489728658 is 856827984.

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

489728658 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 489728598 and 489728607.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 40810716 + ... + 40810727.

It is an arithmetic number, because the mean of its divisors is an integer number (122432166).

Almost surely, 2^489728658 is an apocalyptic number.

489728658 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

489728658 is a wasteful number, since it uses less digits than its factorization.

489728658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81621448.

The product of its digits is 7741440, while the sum is 57.

The square root of 489728658 is about 22129.8137814126. The cubic root of 489728658 is about 788.2279664157.

It can be divided in two parts, 48972 and 8658, that added together give a triangular number (57630 = T₃₃₉).

The spelling of 489728658 in words is "four hundred eighty-nine million, seven hundred twenty-eight thousand, six hundred fifty-eight".