129868768 has 12 divisors (see below), whose sum is σ = 255679200. Its totient is φ = 64934368.

The previous prime is 129868751. The next prime is 129868769. The reversal of 129868768 is 867868921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129868769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2029168 + ... + 2029231.

It is an arithmetic number, because the mean of its divisors is an integer number (21306600).

Almost surely, 2^129868768 is an apocalyptic number.

It is an amenable number.

129868768 is a deficient number, since it is larger than the sum of its proper divisors (125810432).

129868768 is an equidigital number, since it uses as much as digits as its factorization.

129868768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4058409 (or 4058401 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 55.

The square root of 129868768 is about 11395.9978939977. The cubic root of 129868768 is about 506.4091843464.

The spelling of 129868768 in words is "one hundred twenty-nine million, eight hundred sixty-eight thousand, seven hundred sixty-eight".