129868064 has 24 divisors (see below), whose sum is σ = 256838400. Its totient is φ = 64639296.

The previous prime is 129868031. The next prime is 129868069. The reversal of 129868064 is 460868921.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (129868069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1964 + ... + 16235.

It is an arithmetic number, because the mean of its divisors is an integer number (10701600).

Almost surely, 2^129868064 is an apocalyptic number.

It is an amenable number.

129868064 is a deficient number, since it is larger than the sum of its proper divisors (126970336).

129868064 is a wasteful number, since it uses less digits than its factorization.

129868064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18432 (or 18424 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 129868064 is about 11395.9670059192. The cubic root of 129868064 is about 506.4082692876.

The spelling of 129868064 in words is "one hundred twenty-nine million, eight hundred sixty-eight thousand, sixty-four".