491236 has 12 divisors (see below), whose sum is σ = 867328. Its totient is φ = 243432.

The previous prime is 491219. The next prime is 491251. The reversal of 491236 is 632194.

491236 is nontrivially palindromic in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 491236.

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, 25 + ... + 991.

2⁴⁹¹²³⁶ is an apocalyptic number.

It is an amenable number.

491236 is a deficient number, since it is larger than the sum of its proper divisors (376092).

491236 is a wasteful number, since it uses less digits than its factorization.

491236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098 (or 1096 counting only the distinct ones).

The product of its digits is 1296, while the sum is 25.

The square root of 491236 is about 700.8823011034. The cubic root of 491236 is about 78.9035837056.

It can be divided in two parts, 491 and 236, that added together give a palindrome (727).

The spelling of 491236 in words is "four hundred ninety-one thousand, two hundred thirty-six".