28805255 has 8 divisors (see below), whose sum is σ = 34631712. Its totient is φ = 23000608.

The previous prime is 28805239. The next prime is 28805267. The reversal of 28805255 is 55250882.

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

It is a cyclic number.

It is not a de Polignac number, because 28805255 - 2⁴ = 28805239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 2387 + ... + 7956.

It is an arithmetic number, because the mean of its divisors is an integer number (4328964).

Almost surely, 2^28805255 is an apocalyptic number.

28805255 is a deficient number, since it is larger than the sum of its proper divisors (5826457).

28805255 is a wasteful number, since it uses less digits than its factorization.

28805255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10905.

The product of its (nonzero) digits is 32000, while the sum is 35.

The square root of 28805255 is about 5367.0527293851. The cubic root of 28805255 is about 306.5424151387.

The spelling of 28805255 in words is "twenty-eight million, eight hundred five thousand, two hundred fifty-five".