129306308 has 6 divisors (see below), whose sum is σ = 226286046. Its totient is φ = 64653152.

The previous prime is 129306257. The next prime is 129306311. The reversal of 129306308 is 803603921.

It can be written as a sum of positive squares in only one way, i.e., 123698884 + 5607424 = 11122^2 + 2368^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16163285 + ... + 16163292.

It is an arithmetic number, because the mean of its divisors is an integer number (37714341).

Almost surely, 2^129306308 is an apocalyptic number.

It is an amenable number.

129306308 is a deficient number, since it is larger than the sum of its proper divisors (96979738).

129306308 is a wasteful number, since it uses less digits than its factorization.

129306308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32326581 (or 32326579 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 129306308 is about 11371.2931542547. The cubic root of 129306308 is about 505.6770424261.

The spelling of 129306308 in words is "one hundred twenty-nine million, three hundred six thousand, three hundred eight".