2678443 has 4 divisors (see below), whose sum is σ = 2715208. Its totient is φ = 2641680.

The previous prime is 2678441. The next prime is 2678447. The reversal of 2678443 is 3448762.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2678443 - 2¹ = 2678441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2678399 and 2678408.

It is not an unprimeable number, because it can be changed into a prime (2678441) 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 3 ways as a sum of consecutive naturals, for example, 18273 + ... + 18418.

It is an arithmetic number, because the mean of its divisors is an integer number (678802).

2^2678443 is an apocalyptic number.

2678443 is a deficient number, since it is larger than the sum of its proper divisors (36765).

2678443 is an equidigital number, since it uses as much as digits as its factorization.

2678443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36764.

The product of its digits is 32256, while the sum is 34.

The square root of 2678443 is about 1636.5949407230. The cubic root of 2678443 is about 138.8760864525.

The spelling of 2678443 in words is "two million, six hundred seventy-eight thousand, four hundred forty-three".