129876936 has 64 divisors (see below), whose sum is σ = 377395200. Its totient is φ = 36475968.

The previous prime is 129876917. The next prime is 129876953. The reversal of 129876936 is 639678921.

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, 3361 + ... + 16463.

It is an arithmetic number, because the mean of its divisors is an integer number (5896800).

Almost surely, 2^129876936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129876936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188697600).

129876936 is an abundant number, since it is smaller than the sum of its proper divisors (247518264).

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

129876936 is a wasteful number, since it uses less digits than its factorization.

129876936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13178 (or 13174 counting only the distinct ones).

The product of its digits is 979776, while the sum is 51.

The square root of 129876936 is about 11396.3562597876. The cubic root of 129876936 is about 506.4198008674.

The spelling of 129876936 in words is "one hundred twenty-nine million, eight hundred seventy-six thousand, nine hundred thirty-six".