128935 has 8 divisors (see below), whose sum is σ = 156816. Its totient is φ = 101760.

The previous prime is 128923. The next prime is 128939. The reversal of 128935 is 539821.

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

It is not a de Polignac number, because 128935 - 2⁵ = 128903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 415 + ... + 655.

It is an arithmetic number, because the mean of its divisors is an integer number (19602).

2¹²⁸⁹³⁵ is an apocalyptic number.

128935 is a deficient number, since it is larger than the sum of its proper divisors (27881).

128935 is a wasteful number, since it uses less digits than its factorization.

128935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353.

The product of its digits is 2160, while the sum is 28.

The square root of 128935 is about 359.0752010373. The cubic root of 128935 is about 50.5192554744.

The spelling of 128935 in words is "one hundred twenty-eight thousand, nine hundred thirty-five".