130247028 has 36 divisors (see below), whose sum is σ = 341432000. Its totient is φ = 43415352.

The previous prime is 130246981. The next prime is 130247069. The reversal of 130247028 is 820742031.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 130246992 and 130247010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66028 + ... + 67971.

Almost surely, 2^130247028 is an apocalyptic number.

130247028 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

130247028 is an abundant number, since it is smaller than the sum of its proper divisors (211184972).

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

130247028 is a wasteful number, since it uses less digits than its factorization.

130247028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134018 (or 134004 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 130247028 is about 11412.5820040865. The cubic root of 130247028 is about 506.9003690646.

Adding to 130247028 its reverse (820742031), we get a palindrome (950989059).

The spelling of 130247028 in words is "one hundred thirty million, two hundred forty-seven thousand, twenty-eight".