2805219 has 16 divisors (see below), whose sum is σ = 4199040. Its totient is φ = 1850760.

The previous prime is 2805203. The next prime is 2805227. The reversal of 2805219 is 9125082.

It is not a de Polignac number, because 2805219 - 2⁴ = 2805203 is a prime.

It is a super-2 number, since 2×2805219² = 15738507275922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 2805192 and 2805201.

It is not an unprimeable number, because it can be changed into a prime (2805259) 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 in 15 ways as a sum of consecutive naturals, for example, 2404 + ... + 3374.

It is an arithmetic number, because the mean of its divisors is an integer number (262440).

2^2805219 is an apocalyptic number.

2805219 is a deficient number, since it is larger than the sum of its proper divisors (1393821).

2805219 is a wasteful number, since it uses less digits than its factorization.

2805219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087 (or 1081 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 2805219 is about 1674.8788015854. The cubic root of 2805219 is about 141.0334913652.

The spelling of 2805219 in words is "two million, eight hundred five thousand, two hundred nineteen".