129709264 has 20 divisors (see below), whose sum is σ = 252416260. Its totient is φ = 64569600.

The previous prime is 129709207. The next prime is 129709267. The reversal of 129709264 is 462907921.

It can be written as a sum of positive squares in 2 ways, for example, as 77580864 + 52128400 = 8808^2 + 7220^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129709267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14037 + ... + 21364.

It is an arithmetic number, because the mean of its divisors is an integer number (12620813).

Almost surely, 2^129709264 is an apocalyptic number.

It is an amenable number.

129709264 is a deficient number, since it is larger than the sum of its proper divisors (122706996).

129709264 is a wasteful number, since it uses less digits than its factorization.

129709264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35638 (or 35632 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 129709264 is about 11388.9974975851. The cubic root of 129709264 is about 506.2017765578.

The spelling of 129709264 in words is "one hundred twenty-nine million, seven hundred nine thousand, two hundred sixty-four".