28014665 has 8 divisors (see below), whose sum is σ = 38420160. Its totient is φ = 19210032.

The previous prime is 28014659. The next prime is 28014689. The reversal of 28014665 is 56641082.

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 28014665 - 2¹⁰ = 28013641 is a prime.

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, 400175 + ... + 400244.

It is an arithmetic number, because the mean of its divisors is an integer number (4802520).

Almost surely, 2^28014665 is an apocalyptic number.

It is an amenable number.

28014665 is a deficient number, since it is larger than the sum of its proper divisors (10405495).

28014665 is an equidigital number, since it uses as much as digits as its factorization.

28014665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800431.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 28014665 is about 5292.8881529842. Note that the first 3 decimals coincide. The cubic root of 28014665 is about 303.7119017174.

The spelling of 28014665 in words is "twenty-eight million, fourteen thousand, six hundred sixty-five".