28108243 has 2 divisors, whose sum is σ = 28108244. Its totient is φ = 28108242.

The previous prime is 28108229. The next prime is 28108307. The reversal of 28108243 is 34280182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28108243 - 2⁵ = 28108211 is a prime.

It is not a weakly prime, because it can be changed into another prime (28108343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14054121 + 14054122.

It is an arithmetic number, because the mean of its divisors is an integer number (14054122).

Almost surely, 2^28108243 is an apocalyptic number.

28108243 is a deficient number, since it is larger than the sum of its proper divisors (1).

28108243 is an equidigital number, since it uses as much as digits as its factorization.

28108243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 28108243 is about 5301.7207583953. The cubic root of 28108243 is about 304.0496910635.

The spelling of 28108243 in words is "twenty-eight million, one hundred eight thousand, two hundred forty-three".