28235 has 4 divisors (see below), whose sum is σ = 33888. Its totient is φ = 22584.

The previous prime is 28229. The next prime is 28277. The reversal of 28235 is 53282.

28235 = T₉₄ + T₉₅ + ... + T₉₉.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53282 = 2 ⋅26641.

It is a cyclic number.

It is not a de Polignac number, because 28235 - 2⁴ = 28219 is a prime.

It is an Ulam number.

It is a Duffinian 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, 2819 + ... + 2828.

It is an arithmetic number, because the mean of its divisors is an integer number (8472).

2²⁸²³⁵ is an apocalyptic number.

28235 is a deficient number, since it is larger than the sum of its proper divisors (5653).

28235 is an equidigital number, since it uses as much as digits as its factorization.

28235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5652.

The product of its digits is 480, while the sum is 20.

The square root of 28235 is about 168.0327349060. The cubic root of 28235 is about 30.4506053484.

It can be divided in two parts, 282 and 35, that multiplied together give a triangular number (9870 = T₁₄₀).

The spelling of 28235 in words is "twenty-eight thousand, two hundred thirty-five".