129376800 has 432 divisors, whose sum is σ = 555714432. Its totient is φ = 27648000.

The previous prime is 129376777. The next prime is 129376811. The reversal of 129376800 is 8673921.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 856725 + ... + 856875.

It is an arithmetic number, because the mean of its divisors is an integer number (1286376).

Almost surely, 2^129376800 is an apocalyptic number.

129376800 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 129376800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277857216).

129376800 is an abundant number, since it is smaller than the sum of its proper divisors (426337632).

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

129376800 is a wasteful number, since it uses less digits than its factorization.

129376800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 129376800 is about 11374.3922914589. The cubic root of 129376800 is about 505.7689165479.

The spelling of 129376800 in words is "one hundred twenty-nine million, three hundred seventy-six thousand, eight hundred".