489780 has 48 divisors (see below), whose sum is σ = 1525440. Its totient is φ = 130464.

The previous prime is 489761. The next prime is 489791. The reversal of 489780 is 87984.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 489780.

It is an unprimeable number.

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, 87 + ... + 993.

It is an arithmetic number, because the mean of its divisors is an integer number (31780).

2⁴⁸⁹⁷⁸⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 489780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (762720).

489780 is an abundant number, since it is smaller than the sum of its proper divisors (1035660).

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

489780 is a wasteful number, since it uses less digits than its factorization.

489780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925 (or 917 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 489780 is about 699.8428395004. The cubic root of 489780 is about 78.8255510775.

The spelling of 489780 in words is "four hundred eighty-nine thousand, seven hundred eighty".