2821768 has 16 divisors (see below), whose sum is σ = 5434380. Its totient is φ = 1372608.

The previous prime is 2821759. The next prime is 2821769. The reversal of 2821768 is 8671282.

2821768 is digitally balanced in base 5, 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 2 ways, for example, as 2815684 + 6084 = 1678^2 + 78^2 .

It is not an unprimeable number, because it can be changed into a prime (2821769) 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, 4471 + ... + 5062.

2^2821768 is an apocalyptic number.

It is an amenable number.

2821768 is a deficient number, since it is larger than the sum of its proper divisors (2612612).

2821768 is a wasteful number, since it uses less digits than its factorization.

2821768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9576 (or 9572 counting only the distinct ones).

The product of its digits is 10752, while the sum is 34.

The square root of 2821768 is about 1679.8118942310. The cubic root of 2821768 is about 141.3102836110.

The spelling of 2821768 in words is "two million, eight hundred twenty-one thousand, seven hundred sixty-eight".