129808076 has 24 divisors (see below), whose sum is σ = 239519280. Its totient is φ = 61385472.

The previous prime is 129808037. The next prime is 129808087. The reversal of 129808076 is 670808921.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64136 + ... + 66128.

It is an arithmetic number, because the mean of its divisors is an integer number (9979970).

Almost surely, 2^129808076 is an apocalyptic number.

It is an amenable number.

129808076 is a deficient number, since it is larger than the sum of its proper divisors (109711204).

129808076 is a wasteful number, since it uses less digits than its factorization.

129808076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2873 (or 2871 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 129808076 is about 11393.3347181587. The cubic root of 129808076 is about 506.3302847625.

The spelling of 129808076 in words is "one hundred twenty-nine million, eight hundred eight thousand, seventy-six".