129552000 has 128 divisors (see below), whose sum is σ = 429624000. Its totient is φ = 34534400.

The previous prime is 129551999. The next prime is 129552011. The reversal of 129552000 is 255921.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (24).

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 15 ways as a sum of consecutive naturals, for example, 46651 + ... + 49349.

Almost surely, 2^129552000 is an apocalyptic number.

129552000 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 129552000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214812000).

129552000 is an abundant number, since it is smaller than the sum of its proper divisors (300072000).

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

129552000 is an equidigital number, since it uses as much as digits as its factorization.

129552000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2731 (or 2709 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 129552000 is about 11382.0911962609. The cubic root of 129552000 is about 505.9971149726.

The spelling of 129552000 in words is "one hundred twenty-nine million, five hundred fifty-two thousand".