491088 has 40 divisors (see below), whose sum is σ = 1367968. Its totient is φ = 150912.

The previous prime is 491083. The next prime is 491129. The reversal of 491088 is 880194.

It is a happy number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 491088.

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

491088 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 7 ways as a sum of consecutive naturals, for example, 231 + ... + 1017.

2⁴⁹¹⁰⁸⁸ is an apocalyptic number.

491088 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 491088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (683984).

491088 is an abundant number, since it is smaller than the sum of its proper divisors (876880).

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

491088 is a wasteful number, since it uses less digits than its factorization.

491088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811 (or 805 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 491088 is about 700.7767119418. The cubic root of 491088 is about 78.8956588634.

The spelling of 491088 in words is "four hundred ninety-one thousand, eighty-eight".