129872876 has 24 divisors (see below), whose sum is σ = 261735936. Its totient is φ = 55233360.

The previous prime is 129872863. The next prime is 129872879. The reversal of 129872876 is 678278921.

It is a super-2 number, since 2×129872876² = 33733927841022752, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (129872879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14036 + ... + 21371.

It is an arithmetic number, because the mean of its divisors is an integer number (10905664).

Almost surely, 2^129872876 is an apocalyptic number.

It is an amenable number.

129872876 is an abundant number, since it is smaller than the sum of its proper divisors (131863060).

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

129872876 is a wasteful number, since it uses less digits than its factorization.

129872876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35549 (or 35547 counting only the distinct ones).

The product of its digits is 677376, while the sum is 50.

The square root of 129872876 is about 11396.1781312859. The cubic root of 129872876 is about 506.4145238570.

The spelling of 129872876 in words is "one hundred twenty-nine million, eight hundred seventy-two thousand, eight hundred seventy-six".