2787213 has 32 divisors (see below), whose sum is σ = 4475520. Its totient is φ = 1520640.

The previous prime is 2787181. The next prime is 2787227. The reversal of 2787213 is 3127872.

2787213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2787213 - 2⁵ = 2787181 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2787233) 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 31 ways as a sum of consecutive naturals, for example, 31273 + ... + 31361.

It is an arithmetic number, because the mean of its divisors is an integer number (139860).

2^2787213 is an apocalyptic number.

It is an amenable number.

2787213 is a deficient number, since it is larger than the sum of its proper divisors (1688307).

2787213 is a wasteful number, since it uses less digits than its factorization.

2787213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189.

The product of its digits is 4704, while the sum is 30.

The square root of 2787213 is about 1669.4948337746. The cubic root of 2787213 is about 140.7310905108.

The spelling of 2787213 in words is "two million, seven hundred eighty-seven thousand, two hundred thirteen".