2280809 has 4 divisors (see below), whose sum is σ = 2309760. Its totient is φ = 2251860.

The previous prime is 2280767. The next prime is 2280823. The reversal of 2280809 is 9080822.

2280809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2280809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2280869) 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 in 3 ways as a sum of consecutive naturals, for example, 14357 + ... + 14514.

It is an arithmetic number, because the mean of its divisors is an integer number (577440).

2^2280809 is an apocalyptic number.

It is an amenable number.

2280809 is a deficient number, since it is larger than the sum of its proper divisors (28951).

2280809 is an equidigital number, since it uses as much as digits as its factorization.

2280809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28950.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 2280809 is about 1510.2347499644. The cubic root of 2280809 is about 131.6324524321.

The spelling of 2280809 in words is "two million, two hundred eighty thousand, eight hundred nine".