129268650 has 48 divisors (see below), whose sum is σ = 366387264. Its totient is φ = 29546880.

The previous prime is 129268649. The next prime is 129268691. The reversal of 129268650 is 56862921.

It is a junction number, because it is equal to n+sod(n) for n = 129268599 and 129268608.

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 23 ways as a sum of consecutive naturals, for example, 60507 + ... + 62606.

It is an arithmetic number, because the mean of its divisors is an integer number (7633068).

Almost surely, 2^129268650 is an apocalyptic number.

129268650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129268650 is an abundant number, since it is smaller than the sum of its proper divisors (237118614).

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

129268650 is a wasteful number, since it uses less digits than its factorization.

129268650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123135 (or 123130 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 129268650 is about 11369.6371973779. The cubic root of 129268650 is about 505.6279480567.

The spelling of 129268650 in words is "one hundred twenty-nine million, two hundred sixty-eight thousand, six hundred fifty".