491080 has 16 divisors (see below), whose sum is σ = 1105020. Its totient is φ = 196416.

The previous prime is 491059. The next prime is 491081. The reversal of 491080 is 80194.

It can be written as a sum of positive squares in 2 ways, for example, as 443556 + 47524 = 666^2 + 218^2 .

It is not an unprimeable number, because it can be changed into a prime (491081) by changing a digit.

491080 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6099 + ... + 6178.

2⁴⁹¹⁰⁸⁰ is an apocalyptic number.

491080 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

491080 is an abundant number, since it is smaller than the sum of its proper divisors (613940).

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

491080 is a wasteful number, since it uses less digits than its factorization.

491080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12288 (or 12284 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 491080 is about 700.7710039663. The cubic root of 491080 is about 78.8952304482.

The spelling of 491080 in words is "four hundred ninety-one thousand, eighty".