489838128 has 80 divisors (see below), whose sum is σ = 1370599776. Its totient is φ = 149852160.

The previous prime is 489838117. The next prime is 489838133. The reversal of 489838128 is 821838984.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 110776 + ... + 115112.

Almost surely, 2^489838128 is an apocalyptic number.

489838128 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 489838128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (685299888).

489838128 is an abundant number, since it is smaller than the sum of its proper divisors (880761648).

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

489838128 is a wasteful number, since it uses less digits than its factorization.

489838128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4542 (or 4536 counting only the distinct ones).

The product of its digits is 884736, while the sum is 51.

The square root of 489838128 is about 22132.2870033804. The cubic root of 489838128 is about 788.2866934173.

The spelling of 489838128 in words is "four hundred eighty-nine million, eight hundred thirty-eight thousand, one hundred twenty-eight".