489720 has 128 divisors (see below), whose sum is σ = 1866240. Its totient is φ = 99840.

The previous prime is 489691. The next prime is 489733. The reversal of 489720 is 27984.

489720 = T₁₀₅ + T₁₀₆ + ... + T₁₅₉.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9214 + ... + 9266.

It is an arithmetic number, because the mean of its divisors is an integer number (14580).

2⁴⁸⁹⁷²⁰ is an apocalyptic number.

489720 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 489720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (933120).

489720 is an abundant number, since it is smaller than the sum of its proper divisors (1376520).

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

489720 is a wasteful number, since it uses less digits than its factorization.

489720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 489720 is about 699.7999714204. The cubic root of 489720 is about 78.8223321314.

The spelling of 489720 in words is "four hundred eighty-nine thousand, seven hundred twenty".