130189640 has 32 divisors (see below), whose sum is σ = 334774080. Its totient is φ = 44636352.

The previous prime is 130189639. The next prime is 130189651. The reversal of 130189640 is 46981031.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 130189597 and 130189606.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232202 + ... + 232761.

It is an arithmetic number, because the mean of its divisors is an integer number (10461690).

Almost surely, 2^130189640 is an apocalyptic number.

130189640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130189640 is an abundant number, since it is smaller than the sum of its proper divisors (204584440).

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

130189640 is a wasteful number, since it uses less digits than its factorization.

130189640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464981 (or 464977 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 130189640 is about 11410.0674844630. The cubic root of 130189640 is about 506.8259098560.

The spelling of 130189640 in words is "one hundred thirty million, one hundred eighty-nine thousand, six hundred forty".