28048 has 10 divisors (see below), whose sum is σ = 54374. Its totient is φ = 14016.

The previous prime is 28031. The next prime is 28051. The reversal of 28048 is 84082.

28048 is nontrivially palindromic in base 9.

It can be written as a sum of positive squares in only one way, i.e., 16384 + 11664 = 128^2 + 108^2 .

28048 is an undulating number in base 9.

It is a nialpdrome in base 8.

It is an unprimeable number.

28048 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 861 + ... + 892.

2²⁸⁰⁴⁸ is an apocalyptic number.

It is an amenable number.

28048 is a deficient number, since it is larger than the sum of its proper divisors (26326).

28048 is a wasteful number, since it uses less digits than its factorization.

28048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1761 (or 1755 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 28048 is about 167.4753713237. The cubic root of 28048 is about 30.3832317498.

The spelling of 28048 in words is "twenty-eight thousand, forty-eight".