129766036 has 12 divisors (see below), whose sum is σ = 229101012. Its totient is φ = 64308608.

The previous prime is 129766033. The next prime is 129766051. The reversal of 129766036 is 630667921.

It can be written as a sum of positive squares in 2 ways, for example, as 40576900 + 89189136 = 6370^2 + 9444^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 129766036.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129766033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143095 + ... + 143998.

It is an arithmetic number, because the mean of its divisors is an integer number (19091751).

Almost surely, 2^129766036 is an apocalyptic number.

It is an amenable number.

129766036 is a deficient number, since it is larger than the sum of its proper divisors (99334976).

129766036 is a wasteful number, since it uses less digits than its factorization.

129766036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287210 (or 287208 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 129766036 is about 11391.4896304215. The cubic root of 129766036 is about 506.2756183551.

The spelling of 129766036 in words is "one hundred twenty-nine million, seven hundred sixty-six thousand, thirty-six".