28243583 has 2 divisors, whose sum is σ = 28243584. Its totient is φ = 28243582.

The previous prime is 28243577. The next prime is 28243597. The reversal of 28243583 is 38534282.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28243583 - 2¹² = 28239487 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28243283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14121791 + 14121792.

It is an arithmetic number, because the mean of its divisors is an integer number (14121792).

Almost surely, 2^28243583 is an apocalyptic number.

28243583 is a deficient number, since it is larger than the sum of its proper divisors (1).

28243583 is an equidigital number, since it uses as much as digits as its factorization.

28243583 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46080, while the sum is 35.

The square root of 28243583 is about 5314.4692115017. The cubic root of 28243583 is about 304.5369053893.

The spelling of 28243583 in words is "twenty-eight million, two hundred forty-three thousand, five hundred eighty-three".