128435 has 8 divisors (see below), whose sum is σ = 163296. Its totient is φ = 96640.

The previous prime is 128431. The next prime is 128437. The reversal of 128435 is 534821.

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

It is not a de Polignac number, because 128435 - 2² = 128431 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 128435.

It is not an unprimeable number, because it can be changed into a prime (128431) 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, 671 + ... + 840.

It is an arithmetic number, because the mean of its divisors is an integer number (20412).

2¹²⁸⁴³⁵ is an apocalyptic number.

128435 is a deficient number, since it is larger than the sum of its proper divisors (34861).

128435 is a wasteful number, since it uses less digits than its factorization.

128435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1533.

The product of its digits is 960, while the sum is 23.

The square root of 128435 is about 358.3782917533. The cubic root of 128435 is about 50.4538676177.

The spelling of 128435 in words is "one hundred twenty-eight thousand, four hundred thirty-five".