2784005 has 16 divisors (see below), whose sum is σ = 4043520. Its totient is φ = 1796352.

The previous prime is 2783999. The next prime is 2784007. The reversal of 2784005 is 5004872.

2784005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2784005 - 2⁸ = 2783749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2784007) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1745 + ... + 2934.

It is an arithmetic number, because the mean of its divisors is an integer number (252720).

2^2784005 is an apocalyptic number.

It is an amenable number.

2784005 is a deficient number, since it is larger than the sum of its proper divisors (1259515).

2784005 is a wasteful number, since it uses less digits than its factorization.

2784005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4708.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 2784005 is about 1668.5337874913. The cubic root of 2784005 is about 140.6770773375.

Adding to 2784005 its reverse (5004872), we get a palindrome (7788877).

The spelling of 2784005 in words is "two million, seven hundred eighty-four thousand, five".