28280006 has 8 divisors (see below), whose sum is σ = 42478320. Its totient is φ = 14120568.

The previous prime is 28279997. The next prime is 28280047. The reversal of 28280006 is 60008282.

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

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 3 ways as a sum of consecutive naturals, for example, 7826 + ... + 10853.

It is an arithmetic number, because the mean of its divisors is an integer number (5309790).

Almost surely, 2^28280006 is an apocalyptic number.

28280006 is a deficient number, since it is larger than the sum of its proper divisors (14198314).

28280006 is a wasteful number, since it uses less digits than its factorization.

28280006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19438.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 28280006 is about 5317.8948842564. The cubic root of 28280006 is about 304.6677596906.

Adding to 28280006 its reverse (60008282), we get a palindrome (88288288).

The spelling of 28280006 in words is "twenty-eight million, two hundred eighty thousand, six".