2784213 has 20 divisors (see below), whose sum is σ = 4276140. Its totient is φ = 1804032.

The previous prime is 2784181. The next prime is 2784217. The reversal of 2784213 is 3124872.

It can be written as a sum of positive squares in 2 ways, for example, as 1127844 + 1656369 = 1062^2 + 1287^2 .

It is not a de Polignac number, because 2784213 - 2⁵ = 2784181 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2784217) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2533 + ... + 3461.

It is an arithmetic number, because the mean of its divisors is an integer number (213807).

2^2784213 is an apocalyptic number.

It is an amenable number.

2784213 is a deficient number, since it is larger than the sum of its proper divisors (1491927).

2784213 is an equidigital number, since it uses as much as digits as its factorization.

2784213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978 (or 969 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 2784213 is about 1668.5961165003. The cubic root of 2784213 is about 140.6805806960.

The spelling of 2784213 in words is "two million, seven hundred eighty-four thousand, two hundred thirteen".