Search a number
498 = 2383

498 has 8 divisors (see below), whose sum is σ = 1008. Its totient is φ = 164.

The previous prime is 491. The next prime is 499. The reversal of 498 is 894.

498 is nontrivially palindromic in base 5.

It is a sphenic number, since it is the product of 3 distinct primes.

498 is an admirable number.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a plaindrome in base 12, base 14 and base 15.

It is a nialpdrome in base 8.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 498.

It is not an unprimeable number, because it can be changed into a prime (491) by changing a digit.

498 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 3 ways as a sum of consecutive naturals, for example, 36 + ... + 47.

It is an arithmetic number, because the mean of its divisors is an integer number (126).

498 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (504).

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

498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88.

The product of its digits is 288, while the sum is 21.

The square root of 498 is about 22.3159136044. The cubic root of 498 is about 7.9264084445.

Subtracting from 498 its product of digits (288), we obtain a triangular number (210 = T20).

The spelling of 498 in words is "four hundred ninety-eight", and thus it is an aban number.

Divisors: 1 2 3 6 83 166 249 498