130028539 has 16 divisors (see below), whose sum is σ = 136873984. Its totient is φ = 123379200.

The previous prime is 130028537. The next prime is 130028543. The reversal of 130028539 is 935820031.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 130028539 - 2¹ = 130028537 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 130028539.

It is not an unprimeable number, because it can be changed into a prime (130028531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 616144 + ... + 616354.

It is an arithmetic number, because the mean of its divisors is an integer number (8554624).

Almost surely, 2^130028539 is an apocalyptic number.

130028539 is a deficient number, since it is larger than the sum of its proper divisors (6845445).

130028539 is a wasteful number, since it uses less digits than its factorization.

130028539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 130028539 is about 11403.0057002529. The cubic root of 130028539 is about 506.6167691416.

The spelling of 130028539 in words is "one hundred thirty million, twenty-eight thousand, five hundred thirty-nine".