Search a number
-
+
130540 = 22561107
BaseRepresentation
bin11111110111101100
320122001211
4133313230
513134130
62444204
71052404
oct376754
9218054
10130540
118a093
1263664
1347557
1435804
1528a2a
hex1fdec

130540 has 24 divisors (see below), whose sum is σ = 281232. Its totient is φ = 50880.

The previous prime is 130531. The next prime is 130547. The reversal of 130540 is 45031.

It is a self number, because there is not a number n which added to its sum of digits gives 130540.

It is not an unprimeable number, because it can be changed into a prime (130547) 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, 1167 + ... + 1273.

It is an arithmetic number, because the mean of its divisors is an integer number (11718).

2130540 is an apocalyptic number.

130540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130540 is an abundant number, since it is smaller than the sum of its proper divisors (150692).

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

130540 is a wasteful number, since it uses less digits than its factorization.

130540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 130540 is about 361.3031967752. The cubic root of 130540 is about 50.7280151000.

Adding to 130540 its reverse (45031), we get a palindrome (175571).

The spelling of 130540 in words is "one hundred thirty thousand, five hundred forty".

Divisors: 1 2 4 5 10 20 61 107 122 214 244 305 428 535 610 1070 1220 2140 6527 13054 26108 32635 65270 130540