129788328 has 64 divisors (see below), whose sum is σ = 330644160. Its totient is φ = 42448896.

The previous prime is 129788327. The next prime is 129788363. The reversal of 129788328 is 823887921.

It is not an unprimeable number, because it can be changed into a prime (129788327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 458475 + ... + 458757.

It is an arithmetic number, because the mean of its divisors is an integer number (5166315).

Almost surely, 2^129788328 is an apocalyptic number.

It is an amenable number.

129788328 is an abundant number, since it is smaller than the sum of its proper divisors (200855832).

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

129788328 is a wasteful number, since it uses less digits than its factorization.

129788328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586 (or 582 counting only the distinct ones).

The product of its digits is 387072, while the sum is 48.

The square root of 129788328 is about 11392.4680381382. The cubic root of 129788328 is about 506.3046070649.

The spelling of 129788328 in words is "one hundred twenty-nine million, seven hundred eighty-eight thousand, three hundred twenty-eight".