2784004 has 12 divisors (see below), whose sum is σ = 4898124. Its totient is φ = 1384544.

The previous prime is 2783999. The next prime is 2784007. The reversal of 2784004 is 4004872.

It can be written as a sum of positive squares in 2 ways, for example, as 2553604 + 230400 = 1598^2 + 480^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2784004.

It is not an unprimeable number, because it can be changed into a prime (2784007) 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, 979 + ... + 2554.

It is an arithmetic number, because the mean of its divisors is an integer number (408177).

2^2784004 is an apocalyptic number.

It is an amenable number.

2784004 is a deficient number, since it is larger than the sum of its proper divisors (2114120).

2784004 is a wasteful number, since it uses less digits than its factorization.

2784004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3734 (or 3732 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 2784004 is about 1668.5334878270. The cubic root of 2784004 is about 140.6770604940.

Adding to 2784004 its reverse (4004872), we get a palindrome (6788876).

The spelling of 2784004 in words is "two million, seven hundred eighty-four thousand, four".