2805841 has 4 divisors (see below), whose sum is σ = 2896384. Its totient is φ = 2715300.

The previous prime is 2805827. The next prime is 2805851. The reversal of 2805841 is 1485082.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1485082 = 2 ⋅742541.

It is a cyclic number.

It is not a de Polignac number, because 2805841 - 2⁵ = 2805809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2805851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45225 + ... + 45286.

It is an arithmetic number, because the mean of its divisors is an integer number (724096).

2^2805841 is an apocalyptic number.

It is an amenable number.

2805841 is a deficient number, since it is larger than the sum of its proper divisors (90543).

2805841 is an equidigital number, since it uses as much as digits as its factorization.

2805841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90542.

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 2805841 is about 1675.0644763710. The cubic root of 2805841 is about 141.0439143600.

The spelling of 2805841 in words is "two million, eight hundred five thousand, eight hundred forty-one".