2280305 has 4 divisors (see below), whose sum is σ = 2736372. Its totient is φ = 1824240.

The previous prime is 2280293. The next prime is 2280319. The reversal of 2280305 is 5030822.

2280305 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 an emirpimes, since its reverse is a distinct semiprime: 5030822 = 2 ⋅2515411.

It can be written as a sum of positive squares in 2 ways, for example, as 937024 + 1343281 = 968^2 + 1159^2 .

It is not a de Polignac number, because 2280305 - 2¹⁰ = 2279281 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 228026 + ... + 228035.

It is an arithmetic number, because the mean of its divisors is an integer number (684093).

2^2280305 is an apocalyptic number.

It is an amenable number.

2280305 is a deficient number, since it is larger than the sum of its proper divisors (456067).

2280305 is an equidigital number, since it uses as much as digits as its factorization.

2280305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456066.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 2280305 is about 1510.0678792690. The cubic root of 2280305 is about 131.6227559248.

The spelling of 2280305 in words is "two million, two hundred eighty thousand, three hundred five".