489481632 has 72 divisors (see below), whose sum is σ = 1412794656. Its totient is φ = 160718976.

The previous prime is 489481609. The next prime is 489481637. The reversal of 489481632 is 236184984.

It is a happy number.

489481632 is a `hidden beast` number, since 4 + 8 + 9 + 4 + 8 + 1 + 632 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (489481637) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6613 + ... + 31979.

It is an arithmetic number, because the mean of its divisors is an integer number (19622148).

Almost surely, 2^489481632 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 489481632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (706397328).

489481632 is an abundant number, since it is smaller than the sum of its proper divisors (923313024).

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

489481632 is a wasteful number, since it uses less digits than its factorization.

489481632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25450 (or 25439 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 489481632 is about 22124.2317832733. The cubic root of 489481632 is about 788.0954130475.

The spelling of 489481632 in words is "four hundred eighty-nine million, four hundred eighty-one thousand, six hundred thirty-two".