129328415 has 8 divisors (see below), whose sum is σ = 155260368. Its totient is φ = 103418560.

The previous prime is 129328363. The next prime is 129328447. The reversal of 129328415 is 514823921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 129328415 - 2¹⁰ = 129327391 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 13019 + ... + 20691.

It is an arithmetic number, because the mean of its divisors is an integer number (19407546).

Almost surely, 2^129328415 is an apocalyptic number.

129328415 is a deficient number, since it is larger than the sum of its proper divisors (25931953).

129328415 is an equidigital number, since it uses as much as digits as its factorization.

129328415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11049.

The product of its digits is 17280, while the sum is 35.

The square root of 129328415 is about 11372.2651657442. The cubic root of 129328415 is about 505.7058586676.

The spelling of 129328415 in words is "one hundred twenty-nine million, three hundred twenty-eight thousand, four hundred fifteen".