28065255 has 8 divisors (see below), whose sum is σ = 44904432. Its totient is φ = 14968128.

The previous prime is 28065229. The next prime is 28065259. The reversal of 28065255 is 55256082.

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

It is not a de Polignac number, because 28065255 - 2⁸ = 28064999 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28065259) 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, 935494 + ... + 935523.

It is an arithmetic number, because the mean of its divisors is an integer number (5613054).

Almost surely, 2^28065255 is an apocalyptic number.

28065255 is a deficient number, since it is larger than the sum of its proper divisors (16839177).

28065255 is a wasteful number, since it uses less digits than its factorization.

28065255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1871025.

The product of its (nonzero) digits is 24000, while the sum is 33.

The square root of 28065255 is about 5297.6650516997. The cubic root of 28065255 is about 303.8946101381.

The spelling of 28065255 in words is "twenty-eight million, sixty-five thousand, two hundred fifty-five".