129500352 has 84 divisors (see below), whose sum is σ = 390758680. Its totient is φ = 40891392.

The previous prime is 129500309. The next prime is 129500363. The reversal of 129500352 is 253005921.

129500352 is a `hidden beast` number, since 129 + 500 + 35 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5028 + ... + 16860.

Almost surely, 2^129500352 is an apocalyptic number.

129500352 is a gapful number since it is divisible by the number (12) 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 129500352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195379340).

129500352 is an abundant number, since it is smaller than the sum of its proper divisors (261258328).

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

129500352 is a wasteful number, since it uses less digits than its factorization.

129500352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11870 (or 11857 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 129500352 is about 11379.8221427226. The cubic root of 129500352 is about 505.9298647239.

The spelling of 129500352 in words is "one hundred twenty-nine million, five hundred thousand, three hundred fifty-two".