489489280 has 128 divisors (see below), whose sum is σ = 1373964480. Its totient is φ = 163233792.

The previous prime is 489489277. The next prime is 489489281. The reversal of 489489280 is 82984984.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489489281) 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 in 15 ways as a sum of consecutive naturals, for example, 164284 + ... + 167236.

Almost surely, 2^489489280 is an apocalyptic number.

489489280 is a gapful number since it is divisible by the number (40) 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 489489280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (686982240).

489489280 is an abundant number, since it is smaller than the sum of its proper divisors (884475200).

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

489489280 is a wasteful number, since it uses less digits than its factorization.

489489280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3016 (or 3004 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 52.

The square root of 489489280 is about 22124.4046247577. The cubic root of 489489280 is about 788.0995176090.

The spelling of 489489280 in words is "four hundred eighty-nine million, four hundred eighty-nine thousand, two hundred eighty".