130128028 has 6 divisors (see below), whose sum is σ = 227724056. Its totient is φ = 65064012.

The previous prime is 130127993. The next prime is 130128029. The reversal of 130128028 is 820821031.

It is a junction number, because it is equal to n+sod(n) for n = 130127993 and 130128011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130128029) 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 as a sum of consecutive naturals, namely, 16266000 + ... + 16266007.

Almost surely, 2^130128028 is an apocalyptic number.

It is an amenable number.

130128028 is a deficient number, since it is larger than the sum of its proper divisors (97596028).

130128028 is a wasteful number, since it uses less digits than its factorization.

130128028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32532011 (or 32532009 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 130128028 is about 11407.3672685682. The cubic root of 130128028 is about 506.7459457738.

Adding to 130128028 its reverse (820821031), we get a palindrome (950949059).

The spelling of 130128028 in words is "one hundred thirty million, one hundred twenty-eight thousand, twenty-eight".