28284065 has 8 divisors (see below), whose sum is σ = 35727360. Its totient is φ = 21436272.

The previous prime is 28284037. The next prime is 28284071. The reversal of 28284065 is 56048282.

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 28284065 - 2¹⁰ = 28283041 is a prime.

It is a Curzon 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, 148769 + ... + 148958.

It is an arithmetic number, because the mean of its divisors is an integer number (4465920).

Almost surely, 2^28284065 is an apocalyptic number.

It is an amenable number.

28284065 is a deficient number, since it is larger than the sum of its proper divisors (7443295).

28284065 is a wasteful number, since it uses less digits than its factorization.

28284065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297751.

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 28284065 is about 5318.2765065386. The cubic root of 28284065 is about 304.6823352094.

The spelling of 28284065 in words is "twenty-eight million, two hundred eighty-four thousand, sixty-five".