490818 has 16 divisors (see below), whose sum is σ = 989280. Its totient is φ = 162336.

The previous prime is 490783. The next prime is 490829. The reversal of 490818 is 818094.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

490818 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, 846 + ... + 1302.

It is an arithmetic number, because the mean of its divisors is an integer number (61830).

2⁴⁹⁰⁸¹⁸ is an apocalyptic number.

490818 is an abundant number, since it is smaller than the sum of its proper divisors (498462).

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

490818 is a wasteful number, since it uses less digits than its factorization.

490818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641.

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

The square root of 490818 is about 700.5840420678. The cubic root of 490818 is about 78.8811972781.

The spelling of 490818 in words is "four hundred ninety thousand, eight hundred eighteen".