2805845 has 8 divisors (see below), whose sum is σ = 3848064. Its totient is φ = 1923984.

The previous prime is 2805827. The next prime is 2805851. The reversal of 2805845 is 5485082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2805845 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40049 + ... + 40118.

It is an arithmetic number, because the mean of its divisors is an integer number (481008).

2^2805845 is an apocalyptic number.

It is an amenable number.

2805845 is a deficient number, since it is larger than the sum of its proper divisors (1042219).

2805845 is an equidigital number, since it uses as much as digits as its factorization.

2805845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80179.

The product of its (nonzero) digits is 12800, while the sum is 32.

The square root of 2805845 is about 1675.0656703544. The cubic root of 2805845 is about 141.0439813839.

The spelling of 2805845 in words is "two million, eight hundred five thousand, eight hundred forty-five".