129163892 has 96 divisors (see below), whose sum is σ = 289578240. Its totient is φ = 49489920.

The previous prime is 129163889. The next prime is 129163907. The reversal of 129163892 is 298361921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 359609 + ... + 359967.

It is an arithmetic number, because the mean of its divisors is an integer number (3016440).

Almost surely, 2^129163892 is an apocalyptic number.

It is an amenable number.

129163892 is an abundant number, since it is smaller than the sum of its proper divisors (160414348).

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

129163892 is a wasteful number, since it uses less digits than its factorization.

129163892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441 (or 439 counting only the distinct ones).

The product of its digits is 46656, while the sum is 41.

The square root of 129163892 is about 11365.0293444408. The cubic root of 129163892 is about 505.4913258944.

The spelling of 129163892 in words is "one hundred twenty-nine million, one hundred sixty-three thousand, eight hundred ninety-two".