491326 has 16 divisors (see below), whose sum is σ = 839808. Its totient is φ = 213400.

The previous prime is 491299. The next prime is 491327. The reversal of 491326 is 623194.

491326 = 48² + 49² + ... + 116².

It is a self number, because there is not a number n which added to its sum of digits gives 491326.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491327) by changing a digit.

491326 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, 21 + ... + 991.

It is an arithmetic number, because the mean of its divisors is an integer number (52488).

2⁴⁹¹³²⁶ is an apocalyptic number.

491326 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

491326 is a deficient number, since it is larger than the sum of its proper divisors (348482).

491326 is a wasteful number, since it uses less digits than its factorization.

491326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007.

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

The square root of 491326 is about 700.9465029515. The cubic root of 491326 is about 78.9084020882.

The spelling of 491326 in words is "four hundred ninety-one thousand, three hundred twenty-six".