491570880 has 112 divisors (see below), whose sum is σ = 1614647520. Its totient is φ = 126558208.

The previous prime is 491570873. The next prime is 491570887. The reversal of 491570880 is 88075194.

It is an interprime number because it is at equal distance from previous prime (491570873) and next prime (491570887).

It is not an unprimeable number, because it can be changed into a prime (491570887) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 19012 + ... + 36668.

Almost surely, 2^491570880 is an apocalyptic number.

491570880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 491570880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (807323760).

491570880 is an abundant number, since it is smaller than the sum of its proper divisors (1123076640).

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

491570880 is a wasteful number, since it uses less digits than its factorization.

491570880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17706 (or 17696 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 491570880 is about 22171.3977908476. The cubic root of 491570880 is about 789.2150939378.

The spelling of 491570880 in words is "four hundred ninety-one million, five hundred seventy thousand, eight hundred eighty".