489138252 has 36 divisors (see below), whose sum is σ = 1157322600. Its totient is φ = 160791552.

The previous prime is 489138239. The next prime is 489138269. The reversal of 489138252 is 252831984.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60124 + ... + 67772.

It is an arithmetic number, because the mean of its divisors is an integer number (32147850).

Almost surely, 2^489138252 is an apocalyptic number.

It is an amenable number.

489138252 is an abundant number, since it is smaller than the sum of its proper divisors (668184348).

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

489138252 is a wasteful number, since it uses less digits than its factorization.

489138252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7802 (or 7727 counting only the distinct ones).

The product of its digits is 138240, while the sum is 42.

The square root of 489138252 is about 22116.4701523548. The cubic root of 489138252 is about 787.9110823252.

The spelling of 489138252 in words is "four hundred eighty-nine million, one hundred thirty-eight thousand, two hundred fifty-two".