129805304 has 32 divisors (see below), whose sum is σ = 249931440. Its totient is φ = 63168000.

The previous prime is 129805279. The next prime is 129805309. The reversal of 129805304 is 403508921.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129805309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137474 + ... + 138414.

Almost surely, 2^129805304 is an apocalyptic number.

It is an amenable number.

129805304 is a deficient number, since it is larger than the sum of its proper divisors (120126136).

129805304 is a wasteful number, since it uses less digits than its factorization.

129805304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391 (or 1387 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 129805304 is about 11393.2130674362. The cubic root of 129805304 is about 506.3266805760.

The spelling of 129805304 in words is "one hundred twenty-nine million, eight hundred five thousand, three hundred four".