2840216 has 8 divisors (see below), whose sum is σ = 5325420. Its totient is φ = 1420104.

The previous prime is 2840209. The next prime is 2840237. The reversal of 2840216 is 6120482.

2840216 is nontrivially palindromic in base 9.

2840216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 2840191 and 2840200.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 177506 + ... + 177521.

2^2840216 is an apocalyptic number.

It is an amenable number.

2840216 is a deficient number, since it is larger than the sum of its proper divisors (2485204).

2840216 is a wasteful number, since it uses less digits than its factorization.

2840216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355033 (or 355029 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 2840216 is about 1685.2940396263. The cubic root of 2840216 is about 141.6175651441.

Adding to 2840216 its reverse (6120482), we get a palindrome (8960698).

The spelling of 2840216 in words is "two million, eight hundred forty thousand, two hundred sixteen".