28066015 has 8 divisors (see below), whose sum is σ = 33825168. Its totient is φ = 22355520.

The previous prime is 28066007. The next prime is 28066033. The reversal of 28066015 is 51066082.

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

It is not a de Polignac number, because 28066015 - 2³ = 28066007 is a prime.

It is a Duffinian 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, 10881 + ... + 13210.

It is an arithmetic number, because the mean of its divisors is an integer number (4228146).

Almost surely, 2^28066015 is an apocalyptic number.

28066015 is a deficient number, since it is larger than the sum of its proper divisors (5759153).

28066015 is a wasteful number, since it uses less digits than its factorization.

28066015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24329.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 28066015 is about 5297.7367809282. The cubic root of 28066015 is about 303.8973532430.

The spelling of 28066015 in words is "twenty-eight million, sixty-six thousand, fifteen".