130340028 has 48 divisors (see below), whose sum is σ = 374312960. Its totient is φ = 34375104.

The previous prime is 130339999. The next prime is 130340039. The reversal of 130340028 is 820043031.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 130339986 and 130340013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58588 + ... + 60771.

Almost surely, 2^130340028 is an apocalyptic number.

It is an amenable number.

130340028 is an abundant number, since it is smaller than the sum of its proper divisors (243972932).

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

130340028 is a wasteful number, since it uses less digits than its factorization.

130340028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119386 (or 119384 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 130340028 is about 11416.6557274887. The cubic root of 130340028 is about 507.0209873475.

Adding to 130340028 its reverse (820043031), we get a palindrome (950383059).

The spelling of 130340028 in words is "one hundred thirty million, three hundred forty thousand, twenty-eight".