28118003 has 2 divisors, whose sum is σ = 28118004. Its totient is φ = 28118002.

The previous prime is 28117997. The next prime is 28118033. The reversal of 28118003 is 30081182.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28118003 - 2⁴ = 28117987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28118003.

It is not a weakly prime, because it can be changed into another prime (28118033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14059001 + 14059002.

It is an arithmetic number, because the mean of its divisors is an integer number (14059002).

Almost surely, 2^28118003 is an apocalyptic number.

28118003 is a deficient number, since it is larger than the sum of its proper divisors (1).

28118003 is an equidigital number, since it uses as much as digits as its factorization.

28118003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 28118003 is about 5302.6411343782. The cubic root of 28118003 is about 304.0848786249.

Adding to 28118003 its reverse (30081182), we get a palindrome (58199185).

The spelling of 28118003 in words is "twenty-eight million, one hundred eighteen thousand, three".