129828732 has 48 divisors (see below), whose sum is σ = 331161600. Its totient is φ = 39260160.

The previous prime is 129828707. The next prime is 129828793. The reversal of 129828732 is 237828921.

It is a happy number.

129828732 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

129828732 is strictly pandigital in base 9.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 100869 + ... + 102147.

It is an arithmetic number, because the mean of its divisors is an integer number (6899200).

Almost surely, 2^129828732 is an apocalyptic number.

129828732 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129828732 is an abundant number, since it is smaller than the sum of its proper divisors (201332868).

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

129828732 is a wasteful number, since it uses less digits than its factorization.

129828732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2066 (or 2064 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

The square root of 129828732 is about 11394.2411770157. The cubic root of 129828732 is about 506.3571403172.

The spelling of 129828732 in words is "one hundred twenty-nine million, eight hundred twenty-eight thousand, seven hundred thirty-two".