491304 has 32 divisors (see below), whose sum is σ = 1340640. Its totient is φ = 148800.

The previous prime is 491299. The next prime is 491327. The reversal of 491304 is 403194.

It is an unprimeable number.

491304 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 667 + ... + 1194.

It is an arithmetic number, because the mean of its divisors is an integer number (41895).

2⁴⁹¹³⁰⁴ is an apocalyptic number.

491304 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

491304 is an abundant number, since it is smaller than the sum of its proper divisors (849336).

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

491304 is a wasteful number, since it uses less digits than its factorization.

491304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1881 (or 1877 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 491304 is about 700.9308097095. The cubic root of 491304 is about 78.9072243156.

Adding to 491304 its reverse (403194), we get a palindrome (894498).

The spelling of 491304 in words is "four hundred ninety-one thousand, three hundred four".