129834180 has 72 divisors (see below), whose sum is σ = 450096192. Its totient is φ = 29676096.

The previous prime is 129834143. The next prime is 129834197. The reversal of 129834180 is 81438921.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50262 + ... + 52781.

It is an arithmetic number, because the mean of its divisors is an integer number (6251336).

Almost surely, 2^129834180 is an apocalyptic number.

129834180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

129834180 is an abundant number, since it is smaller than the sum of its proper divisors (320262012).

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

129834180 is a wasteful number, since it uses less digits than its factorization.

129834180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103065 (or 103060 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 129834180 is about 11394.4802426438. The cubic root of 129834180 is about 506.3642229690.

The spelling of 129834180 in words is "one hundred twenty-nine million, eight hundred thirty-four thousand, one hundred eighty".