489728916 has 60 divisors (see below), whose sum is σ = 1324420020. Its totient is φ = 157610880.

The previous prime is 489728893. The next prime is 489728927. The reversal of 489728916 is 619827984.

489728916 is a `hidden beast` number, since 489 + 72 + 8 + 91 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 309900816 + 179828100 = 17604^2 + 13410^2 .

It is a super-2 number, since 2×489728916² = 479668822333070112, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 16665 + ... + 35456.

It is an arithmetic number, because the mean of its divisors is an integer number (22073667).

Almost surely, 2^489728916 is an apocalyptic number.

It is an amenable number.

489728916 is an abundant number, since it is smaller than the sum of its proper divisors (834691104).

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

489728916 is a wasteful number, since it uses less digits than its factorization.

489728916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52166 (or 52155 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 489728916 is about 22129.8196106520. The cubic root of 489728916 is about 788.2281048344.

The spelling of 489728916 in words is "four hundred eighty-nine million, seven hundred twenty-eight thousand, nine hundred sixteen".