129730632 has 64 divisors (see below), whose sum is σ = 346291200. Its totient is φ = 40380480.

The previous prime is 129730609. The next prime is 129730721. The reversal of 129730632 is 236037921.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 129730593 and 129730602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30373 + ... + 34379.

It is an arithmetic number, because the mean of its divisors is an integer number (5410800).

Almost surely, 2^129730632 is an apocalyptic number.

129730632 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 129730632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173145600).

129730632 is an abundant number, since it is smaller than the sum of its proper divisors (216560568).

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

129730632 is a wasteful number, since it uses less digits than its factorization.

129730632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4106 (or 4102 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 33.

The square root of 129730632 is about 11389.9355573243. The cubic root of 129730632 is about 506.2295718628.

The spelling of 129730632 in words is "one hundred twenty-nine million, seven hundred thirty thousand, six hundred thirty-two".