489721328 has 20 divisors (see below), whose sum is σ = 958050288. Its totient is φ = 242482560.

The previous prime is 489721327. The next prime is 489721357. The reversal of 489721328 is 823127984.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489721327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146933 + ... + 150228.

Almost surely, 2^489721328 is an apocalyptic number.

It is an amenable number.

489721328 is a deficient number, since it is larger than the sum of its proper divisors (468328960).

489721328 is a wasteful number, since it uses less digits than its factorization.

489721328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297272 (or 297266 counting only the distinct ones).

The product of its digits is 193536, while the sum is 44.

The square root of 489721328 is about 22129.6481671083. The cubic root of 489721328 is about 788.2240338028.

The spelling of 489721328 in words is "four hundred eighty-nine million, seven hundred twenty-one thousand, three hundred twenty-eight".