130528105 has 24 divisors (see below), whose sum is σ = 166629960. Its totient is φ = 98123520.

The previous prime is 130528087. The next prime is 130528117. The reversal of 130528105 is 501825031.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7118224 + 123409881 = 2668^2 + 11109^2 .

It is not a de Polignac number, because 130528105 - 2¹³ = 130519913 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 130528105.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 160941 + ... + 161749.

It is an arithmetic number, because the mean of its divisors is an integer number (6942915).

Almost surely, 2^130528105 is an apocalyptic number.

It is an amenable number.

130528105 is a deficient number, since it is larger than the sum of its proper divisors (36101855).

130528105 is an equidigital number, since it uses as much as digits as its factorization.

130528105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921 (or 898 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 130528105 is about 11424.8897150038. The cubic root of 130528105 is about 507.2647424897.

The spelling of 130528105 in words is "one hundred thirty million, five hundred twenty-eight thousand, one hundred five".