129729630 has 16 divisors (see below), whose sum is σ = 311351184. Its totient is φ = 34594560.

The previous prime is 129729629. The next prime is 129729641. The reversal of 129729630 is 36927921.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2162131 + ... + 2162190.

It is an arithmetic number, because the mean of its divisors is an integer number (19459449).

Almost surely, 2^129729630 is an apocalyptic number.

129729630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129729630 is an abundant number, since it is smaller than the sum of its proper divisors (181621554).

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

129729630 is a wasteful number, since it uses less digits than its factorization.

129729630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4324331.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 129729630 is about 11389.8915710379. The cubic root of 129729630 is about 506.2282685383.

The spelling of 129729630 in words is "one hundred twenty-nine million, seven hundred twenty-nine thousand, six hundred thirty".