491574320 has 20 divisors (see below), whose sum is σ = 1142910480. Its totient is φ = 196629696.

The previous prime is 491574319. The next prime is 491574337. The reversal of 491574320 is 23475194.

It is a tau number, because it is divible by the number of its divisors (20).

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, 3072260 + ... + 3072419.

It is an arithmetic number, because the mean of its divisors is an integer number (57145524).

Almost surely, 2^491574320 is an apocalyptic number.

491574320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

491574320 is an abundant number, since it is smaller than the sum of its proper divisors (651336160).

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

491574320 is a wasteful number, since it uses less digits than its factorization.

491574320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6144692 (or 6144686 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 491574320 is about 22171.4753681391. The cubic root of 491574320 is about 789.2169349023.

The spelling of 491574320 in words is "four hundred ninety-one million, five hundred seventy-four thousand, three hundred twenty".