129530660 has 48 divisors (see below), whose sum is σ = 311520384. Its totient is φ = 44318208.

The previous prime is 129530627. The next prime is 129530677. The reversal of 129530660 is 66035921.

It is a happy number.

129530660 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 132092 + ... + 133068.

It is an arithmetic number, because the mean of its divisors is an integer number (6490008).

Almost surely, 2^129530660 is an apocalyptic number.

129530660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129530660 is an abundant number, since it is smaller than the sum of its proper divisors (181989724).

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

129530660 is a wasteful number, since it uses less digits than its factorization.

129530660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1940 (or 1938 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 129530660 is about 11381.1537200760. The cubic root of 129530660 is about 505.9693305787.

The spelling of 129530660 in words is "one hundred twenty-nine million, five hundred thirty thousand, six hundred sixty".