28944065 has 8 divisors (see below), whose sum is σ = 34872768. Its totient is φ = 23062000.

The previous prime is 28944053. The next prime is 28944077. The reversal of 28944065 is 56044982.

It is an interprime number because it is at equal distance from previous prime (28944053) and next prime (28944077).

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

It is not a de Polignac number, because 28944065 - 2¹⁰ = 28943041 is a prime.

It is a Duffinian 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, 10277 + ... + 12786.

It is an arithmetic number, because the mean of its divisors is an integer number (4359096).

Almost surely, 2^28944065 is an apocalyptic number.

It is an amenable number.

28944065 is a deficient number, since it is larger than the sum of its proper divisors (5928703).

28944065 is a wasteful number, since it uses less digits than its factorization.

28944065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23319.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 28944065 is about 5379.9688660809. The cubic root of 28944065 is about 307.0340266514.

The spelling of 28944065 in words is "twenty-eight million, nine hundred forty-four thousand, sixty-five".