489728428 has 24 divisors (see below), whose sum is σ = 981204224. Its totient is φ = 209509200.

The previous prime is 489728399. The next prime is 489728431. The reversal of 489728428 is 824827984.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 673 + ... + 31303.

Almost surely, 2^489728428 is an apocalyptic number.

It is an amenable number.

489728428 is an abundant number, since it is smaller than the sum of its proper divisors (491475796).

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

489728428 is a wasteful number, since it uses less digits than its factorization.

489728428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31213 (or 31211 counting only the distinct ones).

The product of its digits is 2064384, while the sum is 52.

The square root of 489728428 is about 22129.8085848025. The cubic root of 489728428 is about 788.2278430192.

The spelling of 489728428 in words is "four hundred eighty-nine million, seven hundred twenty-eight thousand, four hundred twenty-eight".