129326268 has 24 divisors (see below), whose sum is σ = 301945168. Its totient is φ = 43082496.

The previous prime is 129326261. The next prime is 129326269. The reversal of 129326268 is 862623921.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129326261) 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, 37380 + ... + 40692.

Almost surely, 2^129326268 is an apocalyptic number.

It is an amenable number.

129326268 is an abundant number, since it is smaller than the sum of its proper divisors (172618900).

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

129326268 is a wasteful number, since it uses less digits than its factorization.

129326268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6573 (or 6571 counting only the distinct ones).

The product of its digits is 62208, while the sum is 39.

The square root of 129326268 is about 11372.1707690309. The cubic root of 129326268 is about 505.7030602197.

The spelling of 129326268 in words is "one hundred twenty-nine million, three hundred twenty-six thousand, two hundred sixty-eight".