130857028 has 24 divisors (see below), whose sum is σ = 251536320. Its totient is φ = 59289120.

The previous prime is 130857011. The next prime is 130857029. The reversal of 130857028 is 820758031.

It is a junction number, because it is equal to n+sod(n) for n = 130856984 and 130857002.

It is not an unprimeable number, because it can be changed into a prime (130857029) 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 in 7 ways as a sum of consecutive naturals, for example, 35683 + ... + 39178.

It is an arithmetic number, because the mean of its divisors is an integer number (10480680).

Almost surely, 2^130857028 is an apocalyptic number.

It is an amenable number.

130857028 is a deficient number, since it is larger than the sum of its proper divisors (120679292).

130857028 is a wasteful number, since it uses less digits than its factorization.

130857028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74907 (or 74905 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 130857028 is about 11439.2756763704. The cubic root of 130857028 is about 507.6904773285.

The spelling of 130857028 in words is "one hundred thirty million, eight hundred fifty-seven thousand, twenty-eight".