Search a number
-
+
130518 = 2332417
BaseRepresentation
bin11111110111010110
320122001000
4133313112
513134033
62444130
71052343
oct376726
9218030
10130518
118a073
1263646
134753b
14357ca
1528a13
hex1fdd6

130518 has 16 divisors (see below), whose sum is σ = 290160. Its totient is φ = 43488.

The previous prime is 130517. The next prime is 130523. The reversal of 130518 is 815031.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 130518.

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 130518.

It is not an unprimeable number, because it can be changed into a prime (130513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1155 + ... + 1262.

It is an arithmetic number, because the mean of its divisors is an integer number (18135).

2130518 is an apocalyptic number.

130518 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

130518 is an abundant number, since it is smaller than the sum of its proper divisors (159642).

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

130518 is a wasteful number, since it uses less digits than its factorization.

130518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2428 (or 2422 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 130518 is about 361.2727501487. The cubic root of 130518 is about 50.7251651969.

Adding to 130518 its reverse (815031), we get a palindrome (945549).

The spelling of 130518 in words is "one hundred thirty thousand, five hundred eighteen".

Divisors: 1 2 3 6 9 18 27 54 2417 4834 7251 14502 21753 43506 65259 130518