129801168 has 120 divisors (see below), whose sum is σ = 422163456. Its totient is φ = 36460800.

The previous prime is 129801157. The next prime is 129801181. The reversal of 129801168 is 861108921.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 60433 + ... + 62543.

Almost surely, 2^129801168 is an apocalyptic number.

129801168 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 129801168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211081728).

129801168 is an abundant number, since it is smaller than the sum of its proper divisors (292362288).

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

129801168 is a wasteful number, since it uses less digits than its factorization.

129801168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2193 (or 2184 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 36.

The square root of 129801168 is about 11393.0315544196. The cubic root of 129801168 is about 506.3213028055.

The spelling of 129801168 in words is "one hundred twenty-nine million, eight hundred one thousand, one hundred sixty-eight".