28123283 has 2 divisors, whose sum is σ = 28123284. Its totient is φ = 28123282.

The previous prime is 28123241. The next prime is 28123339. The reversal of 28123283 is 38232182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28123283 - 2¹⁶ = 28057747 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28123213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14061641 + 14061642.

It is an arithmetic number, because the mean of its divisors is an integer number (14061642).

Almost surely, 2^28123283 is an apocalyptic number.

28123283 is a deficient number, since it is larger than the sum of its proper divisors (1).

28123283 is an equidigital number, since it uses as much as digits as its factorization.

28123283 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 29.

The square root of 28123283 is about 5303.1389761159. The cubic root of 28123283 is about 304.1039111248.

The spelling of 28123283 in words is "twenty-eight million, one hundred twenty-three thousand, two hundred eighty-three".