491788 has 12 divisors (see below), whose sum is σ = 938952. Its totient is φ = 223520.

The previous prime is 491783. The next prime is 491789. The reversal of 491788 is 887194.

It is a plaindrome in base 15.

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 3 ways as a sum of consecutive naturals, for example, 5545 + ... + 5632.

It is an arithmetic number, because the mean of its divisors is an integer number (78246).

2⁴⁹¹⁷⁸⁸ is an apocalyptic number.

It is an amenable number.

491788 is a deficient number, since it is larger than the sum of its proper divisors (447164).

491788 is a wasteful number, since it uses less digits than its factorization.

491788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11192 (or 11190 counting only the distinct ones).

The product of its digits is 16128, while the sum is 37.

The square root of 491788 is about 701.2759799109. The cubic root of 491788 is about 78.9331271934.

It can be divided in two parts, 4917 and 88, that added together give a palindrome (5005).

The spelling of 491788 in words is "four hundred ninety-one thousand, seven hundred eighty-eight".