129880328 has 32 divisors (see below), whose sum is σ = 260064000. Its totient is φ = 60674880.

The previous prime is 129880321. The next prime is 129880337. The reversal of 129880328 is 823088921.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (129880321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1838 + ... + 16221.

It is an arithmetic number, because the mean of its divisors is an integer number (8127000).

Almost surely, 2^129880328 is an apocalyptic number.

It is an amenable number.

129880328 is an abundant number, since it is smaller than the sum of its proper divisors (130183672).

129880328 is a wasteful number, since it uses less digits than its factorization.

129880328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18125 (or 18121 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 129880328 is about 11396.5050783124. The cubic root of 129880328 is about 506.4242095563.

The spelling of 129880328 in words is "one hundred twenty-nine million, eight hundred eighty thousand, three hundred twenty-eight".