129988800 has 420 divisors, whose sum is σ = 514487160. Its totient is φ = 32071680.

The previous prime is 129988763. The next prime is 129988829. The reversal of 129988800 is 8889921.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 2203171 + ... + 2203229.

Almost surely, 2^129988800 is an apocalyptic number.

129988800 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 129988800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257243580).

129988800 is an abundant number, since it is smaller than the sum of its proper divisors (384498360).

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

129988800 is a wasteful number, since it uses less digits than its factorization.

129988800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 45.

The square root of 129988800 is about 11401.2630879214. The cubic root of 129988800 is about 506.5651535624.

The spelling of 129988800 in words is "one hundred twenty-nine million, nine hundred eighty-eight thousand, eight hundred".