129238200 has 384 divisors, whose sum is σ = 549964800. Its totient is φ = 27164160.

The previous prime is 129238157. The next prime is 129238217. The reversal of 129238200 is 2832921.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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, 491269 + ... + 491531.

It is an arithmetic number, because the mean of its divisors is an integer number (1432200).

Almost surely, 2^129238200 is an apocalyptic number.

129238200 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 129238200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274982400).

129238200 is an abundant number, since it is smaller than the sum of its proper divisors (420726600).

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

129238200 is a wasteful number, since it uses less digits than its factorization.

129238200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308 (or 293 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 129238200 is about 11368.2980256501. The cubic root of 129238200 is about 505.5882437147.

The spelling of 129238200 in words is "one hundred twenty-nine million, two hundred thirty-eight thousand, two hundred".