2808269 has 2 divisors, whose sum is σ = 2808270. Its totient is φ = 2808268.

The previous prime is 2808251. The next prime is 2808293. The reversal of 2808269 is 9628082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2402500 + 405769 = 1550^2 + 637^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2808269 is a prime.

It is a super-2 number, since 2×2808269² = 15772749552722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2808229) 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, 1404134 + 1404135.

It is an arithmetic number, because the mean of its divisors is an integer number (1404135).

2^2808269 is an apocalyptic number.

It is an amenable number.

2808269 is a deficient number, since it is larger than the sum of its proper divisors (1).

2808269 is an equidigital number, since it uses as much as digits as its factorization.

2808269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 2808269 is about 1675.7890678722. The cubic root of 2808269 is about 141.0845861695.

The spelling of 2808269 in words is "two million, eight hundred eight thousand, two hundred sixty-nine".