130528 has 12 divisors (see below), whose sum is σ = 257040. Its totient is φ = 65248.

The previous prime is 130523. The next prime is 130531. The reversal of 130528 is 825031.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130523) by changing a digit.

130528 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 as a sum of consecutive naturals, namely, 2008 + ... + 2071.

It is an arithmetic number, because the mean of its divisors is an integer number (21420).

2¹³⁰⁵²⁸ is an apocalyptic number.

It is an amenable number.

130528 is a deficient number, since it is larger than the sum of its proper divisors (126512).

130528 is an equidigital number, since it uses as much as digits as its factorization.

130528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4089 (or 4081 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 130528 is about 361.2865898425. The cubic root of 130528 is about 50.7264606471.

Adding to 130528 its reverse (825031), we get a palindrome (955559).

The spelling of 130528 in words is "one hundred thirty thousand, five hundred twenty-eight".