491440528 has 20 divisors (see below), whose sum is σ = 953296128. Its totient is φ = 245428640.

The previous prime is 491440519. The next prime is 491440531. The reversal of 491440528 is 825044194.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3988 + ... + 31603.

Almost surely, 2^491440528 is an apocalyptic number.

It is an amenable number.

491440528 is a deficient number, since it is larger than the sum of its proper divisors (461855600).

491440528 is a wasteful number, since it uses less digits than its factorization.

491440528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36462 (or 36456 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 491440528 is about 22168.4579526858. The cubic root of 491440528 is about 789.1453278981.

The spelling of 491440528 in words is "four hundred ninety-one million, four hundred forty thousand, five hundred twenty-eight".