2808023 has 2 divisors, whose sum is σ = 2808024. Its totient is φ = 2808022.

The previous prime is 2808017. The next prime is 2808031. The reversal of 2808023 is 3208082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2808023 - 2⁴ = 2808007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2808023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2808083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1404011 + 1404012.

It is an arithmetic number, because the mean of its divisors is an integer number (1404012).

2^2808023 is an apocalyptic number.

2808023 is a deficient number, since it is larger than the sum of its proper divisors (1).

2808023 is an equidigital number, since it uses as much as digits as its factorization.

2808023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 2808023 is about 1675.7156680058. The cubic root of 2808023 is about 141.0804664523.

The spelling of 2808023 in words is "two million, eight hundred eight thousand, twenty-three".