129532766 has 32 divisors (see below), whose sum is σ = 225244800. Its totient is φ = 55248480.

The previous prime is 129532751. The next prime is 129532769. The reversal of 129532766 is 667235921.

129532766 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×129532766² = 33557474935221512, which contains 22 as substring.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129532769) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44141 + ... + 46983.

It is an arithmetic number, because the mean of its divisors is an integer number (7038900).

Almost surely, 2^129532766 is an apocalyptic number.

129532766 is a deficient number, since it is larger than the sum of its proper divisors (95712034).

129532766 is a wasteful number, since it uses less digits than its factorization.

129532766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2984.

The product of its digits is 136080, while the sum is 41.

The square root of 129532766 is about 11381.2462410757. The cubic root of 129532766 is about 505.9720726982.

The spelling of 129532766 in words is "one hundred twenty-nine million, five hundred thirty-two thousand, seven hundred sixty-six".