129888360 has 384 divisors, whose sum is σ = 528353280. Its totient is φ = 28055808.

The previous prime is 129888359. The next prime is 129888371. The reversal of 129888360 is 63888921.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1564879 + ... + 1564961.

It is an arithmetic number, because the mean of its divisors is an integer number (1375920).

Almost surely, 2^129888360 is an apocalyptic number.

129888360 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 129888360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264176640).

129888360 is an abundant number, since it is smaller than the sum of its proper divisors (398464920).

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

129888360 is a wasteful number, since it uses less digits than its factorization.

129888360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 129888360 is about 11396.8574615988. The cubic root of 129888360 is about 506.4346486928.

The spelling of 129888360 in words is "one hundred twenty-nine million, eight hundred eighty-eight thousand, three hundred sixty".