28365927 has 4 divisors (see below), whose sum is σ = 37821240. Its totient is φ = 18910616.

The previous prime is 28365919. The next prime is 28365929. The reversal of 28365927 is 72956382.

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 28365927 - 2³ = 28365919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28365929) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4727652 + ... + 4727657.

It is an arithmetic number, because the mean of its divisors is an integer number (9455310).

Almost surely, 2^28365927 is an apocalyptic number.

28365927 is a deficient number, since it is larger than the sum of its proper divisors (9455313).

28365927 is an equidigital number, since it uses as much as digits as its factorization.

28365927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9455312.

The product of its digits is 181440, while the sum is 42.

The square root of 28365927 is about 5325.9672360990. The cubic root of 28365927 is about 304.9759973945.

It can be divided in two parts, 28365 and 927, that added together give a palindrome (29292).

The spelling of 28365927 in words is "twenty-eight million, three hundred sixty-five thousand, nine hundred twenty-seven".