28080506 has 8 divisors (see below), whose sum is σ = 42154560. Its totient is φ = 14028988.

The previous prime is 28080473. The next prime is 28080511. The reversal of 28080506 is 60508082.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2066 + ... + 7773.

It is an arithmetic number, because the mean of its divisors is an integer number (5269320).

Almost surely, 2^28080506 is an apocalyptic number.

28080506 is a deficient number, since it is larger than the sum of its proper divisors (14074054).

28080506 is a wasteful number, since it uses less digits than its factorization.

28080506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11268.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 28080506 is about 5299.1042639299. The cubic root of 28080506 is about 303.9496468426.

Adding to 28080506 its reverse (60508082), we get a palindrome (88588588).

The spelling of 28080506 in words is "twenty-eight million, eighty thousand, five hundred six".