28805927 has 4 divisors (see below), whose sum is σ = 28825440. Its totient is φ = 28786416.

The previous prime is 28805893. The next prime is 28805929. The reversal of 28805927 is 72950882.

It is a happy number.

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 28805927 - 2¹⁰ = 28804903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28805929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7343 + ... + 10560.

It is an arithmetic number, because the mean of its divisors is an integer number (7206360).

Almost surely, 2^28805927 is an apocalyptic number.

28805927 is a deficient number, since it is larger than the sum of its proper divisors (19513).

28805927 is a wasteful number, since it uses less digits than its factorization.

28805927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19512.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 28805927 is about 5367.1153332121. The cubic root of 28805927 is about 306.5447989040.

The spelling of 28805927 in words is "twenty-eight million, eight hundred five thousand, nine hundred twenty-seven".