129684030 has 64 divisors (see below), whose sum is σ = 360253440. Its totient is φ = 29263104.

The previous prime is 129684011. The next prime is 129684031. The reversal of 129684030 is 30486921.

It is a junction number, because it is equal to n+sod(n) for n = 129683982 and 129684000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129684031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12682 + ... + 20498.

It is an arithmetic number, because the mean of its divisors is an integer number (5628960).

Almost surely, 2^129684030 is an apocalyptic number.

129684030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 129684030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180126720).

129684030 is an abundant number, since it is smaller than the sum of its proper divisors (230569410).

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

129684030 is a wasteful number, since it uses less digits than its factorization.

129684030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7913.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 129684030 is about 11387.8896201184. The cubic root of 129684030 is about 506.1689484630.

The spelling of 129684030 in words is "one hundred twenty-nine million, six hundred eighty-four thousand, thirty".