28448563 has 8 divisors (see below), whose sum is σ = 33422256. Its totient is φ = 23872800.

The previous prime is 28448549. The next prime is 28448579. The reversal of 28448563 is 36584482.

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 28448563 - 2⁹ = 28448051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28448503) by changing a digit.

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, 99328 + ... + 99613.

It is an arithmetic number, because the mean of its divisors is an integer number (4177782).

Almost surely, 2^28448563 is an apocalyptic number.

28448563 is a deficient number, since it is larger than the sum of its proper divisors (4973693).

28448563 is a wasteful number, since it uses less digits than its factorization.

28448563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198965.

The product of its digits is 184320, while the sum is 40.

The square root of 28448563 is about 5333.7194339410. The cubic root of 28448563 is about 305.2718636653.

The spelling of 28448563 in words is "twenty-eight million, four hundred forty-eight thousand, five hundred sixty-three".