491607728 has 10 divisors (see below), whose sum is σ = 952490004. Its totient is φ = 245803856.

The previous prime is 491607709. The next prime is 491607749. The reversal of 491607728 is 827706194.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15362726 + ... + 15362757.

Almost surely, 2^491607728 is an apocalyptic number.

It is an amenable number.

491607728 is a deficient number, since it is larger than the sum of its proper divisors (460882276).

491607728 is a wasteful number, since it uses less digits than its factorization.

491607728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30725491 (or 30725485 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 491607728 is about 22172.2287558107. The cubic root of 491607728 is about 789.2348132176.

The spelling of 491607728 in words is "four hundred ninety-one million, six hundred seven thousand, seven hundred twenty-eight".