2787284 has 18 divisors (see below), whose sum is σ = 5022990. Its totient is φ = 1353312.

The previous prime is 2787271. The next prime is 2787289. The reversal of 2787284 is 4827872.

2787284 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 2016400 + 770884 = 1420^2 + 878^2 .

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2787289) 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 5 ways as a sum of consecutive naturals, for example, 5222 + ... + 5730.

It is an arithmetic number, because the mean of its divisors is an integer number (279055).

2^2787284 is an apocalyptic number.

It is an amenable number.

2787284 is a deficient number, since it is larger than the sum of its proper divisors (2235706).

2787284 is a wasteful number, since it uses less digits than its factorization.

2787284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587 (or 548 counting only the distinct ones).

The product of its digits is 50176, while the sum is 38.

The square root of 2787284 is about 1669.5160975564. The cubic root of 2787284 is about 140.7322854706.

The spelling of 2787284 in words is "two million, seven hundred eighty-seven thousand, two hundred eighty-four".