129756264 has 32 divisors (see below), whose sum is σ = 353881440. Its totient is φ = 39320000.

The previous prime is 129756239. The next prime is 129756269. The reversal of 129756264 is 462657921.

It is not an unprimeable number, because it can be changed into a prime (129756269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245487 + ... + 246014.

It is an arithmetic number, because the mean of its divisors is an integer number (11058795).

Almost surely, 2^129756264 is an apocalyptic number.

It is an amenable number.

129756264 is an abundant number, since it is smaller than the sum of its proper divisors (224125176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129756264 is a wasteful number, since it uses less digits than its factorization.

129756264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491521 (or 491517 counting only the distinct ones).

The product of its digits is 181440, while the sum is 42.

The square root of 129756264 is about 11391.0607056586. The cubic root of 129756264 is about 506.2629097150.

The spelling of 129756264 in words is "one hundred twenty-nine million, seven hundred fifty-six thousand, two hundred sixty-four".