129327696 has 30 divisors (see below), whose sum is σ = 361938330. Its totient is φ = 43109184.

The previous prime is 129327659. The next prime is 129327719. The reversal of 129327696 is 696723921.

It is a happy number.

129327696 is a `hidden beast` number, since 1 + 293 + 276 + 96 = 666.

It can be written as a sum of positive squares in only one way, i.e., 73616400 + 55711296 = 8580^2 + 7464^2 .

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 448911 + ... + 449198.

It is an arithmetic number, because the mean of its divisors is an integer number (12064611).

Almost surely, 2^129327696 is an apocalyptic number.

129327696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

129327696 is an abundant number, since it is smaller than the sum of its proper divisors (232610634).

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

129327696 is a wasteful number, since it uses less digits than its factorization.

129327696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898123 (or 898114 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 129327696 is about 11372.2335537044. The cubic root of 129327696 is about 505.7049215103.

The spelling of 129327696 in words is "one hundred twenty-nine million, three hundred twenty-seven thousand, six hundred ninety-six".