491782 has 16 divisors (see below), whose sum is σ = 781200. Its totient is φ = 231840.

The previous prime is 491773. The next prime is 491783. The reversal of 491782 is 287194.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3469 + ... + 3607.

It is an arithmetic number, because the mean of its divisors is an integer number (48825).

2⁴⁹¹⁷⁸² is an apocalyptic number.

491782 is a deficient number, since it is larger than the sum of its proper divisors (289418).

491782 is a wasteful number, since it uses less digits than its factorization.

491782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231.

The product of its digits is 4032, while the sum is 31.

The square root of 491782 is about 701.2717019815. The cubic root of 491782 is about 78.9328061874.

The spelling of 491782 in words is "four hundred ninety-one thousand, seven hundred eighty-two".