129663960 has 64 divisors (see below), whose sum is σ = 390221280. Its totient is φ = 34467840.

The previous prime is 129663889. The next prime is 129663971. The reversal of 129663960 is 69366921.

129663960 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40830 + ... + 43890.

Almost surely, 2^129663960 is an apocalyptic number.

129663960 is a gapful number since it is divisible by the number (10) 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 129663960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195110640).

129663960 is an abundant number, since it is smaller than the sum of its proper divisors (260557320).

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

129663960 is a wasteful number, since it uses less digits than its factorization.

129663960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3428 (or 3424 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 42.

The square root of 129663960 is about 11387.0083867537. The cubic root of 129663960 is about 506.1428354176.

It can be divided in two parts, 1296 and 63960, that added together give a palindrome (65256).

The spelling of 129663960 in words is "one hundred twenty-nine million, six hundred sixty-three thousand, nine hundred sixty".