128795 has 4 divisors (see below), whose sum is σ = 154560. Its totient is φ = 103032.

The previous prime is 128767. The next prime is 128813. The reversal of 128795 is 597821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 128795 - 2¹² = 124699 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12875 + ... + 12884.

It is an arithmetic number, because the mean of its divisors is an integer number (38640).

2¹²⁸⁷⁹⁵ is an apocalyptic number.

128795 is a deficient number, since it is larger than the sum of its proper divisors (25765).

128795 is an equidigital number, since it uses as much as digits as its factorization.

128795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25764.

The product of its digits is 5040, while the sum is 32.

The square root of 128795 is about 358.8802028533. The cubic root of 128795 is about 50.5009639394.

It can be divided in two parts, 1287 and 95, that multiplied together give a triangular number (122265 = T₄₉₄).

The spelling of 128795 in words is "one hundred twenty-eight thousand, seven hundred ninety-five".