129828328 has 32 divisors (see below), whose sum is σ = 282130560. Its totient is φ = 54855360.

The previous prime is 129828317. The next prime is 129828397. The reversal of 129828328 is 823828921.

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, 12351 + ... + 20302.

It is an arithmetic number, because the mean of its divisors is an integer number (8816580).

Almost surely, 2^129828328 is an apocalyptic number.

It is an amenable number.

129828328 is an abundant number, since it is smaller than the sum of its proper divisors (152302232).

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

129828328 is a wasteful number, since it uses less digits than its factorization.

129828328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32737 (or 32733 counting only the distinct ones).

The product of its digits is 110592, while the sum is 43.

The square root of 129828328 is about 11394.2234487481. The cubic root of 129828328 is about 506.3566150906.

The spelling of 129828328 in words is "one hundred twenty-nine million, eight hundred twenty-eight thousand, three hundred twenty-eight".