28026005 has 8 divisors (see below), whose sum is σ = 38435712. Its totient is φ = 19217808.

The previous prime is 28025999. The next prime is 28026017. The reversal of 28026005 is 50062082.

It is a happy number.

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 28026005 - 2⁴ = 28025989 is a prime.

It is a Curzon 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, 400337 + ... + 400406.

It is an arithmetic number, because the mean of its divisors is an integer number (4804464).

Almost surely, 2^28026005 is an apocalyptic number.

It is an amenable number.

28026005 is a deficient number, since it is larger than the sum of its proper divisors (10409707).

28026005 is an equidigital number, since it uses as much as digits as its factorization.

28026005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800755.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 28026005 is about 5293.9592933834. The cubic root of 28026005 is about 303.7528758329.

Adding to 28026005 its reverse (50062082), we get a palindrome (78088087).

The spelling of 28026005 in words is "twenty-eight million, twenty-six thousand, five".