2821006 has 16 divisors (see below), whose sum is σ = 4530960. Its totient is φ = 1313280.

The previous prime is 2821001. The next prime is 2821009. The reversal of 2821006 is 6001282.

It is a happy number.

2821006 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2821001) 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 7 ways as a sum of consecutive naturals, for example, 1710 + ... + 2926.

It is an arithmetic number, because the mean of its divisors is an integer number (283185).

2^2821006 is an apocalyptic number.

2821006 is a deficient number, since it is larger than the sum of its proper divisors (1709954).

2821006 is a wasteful number, since it uses less digits than its factorization.

2821006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 2821006 is about 1679.5850678069. The cubic root of 2821006 is about 141.2975624931.

Adding to 2821006 its reverse (6001282), we get a palindrome (8822288).

The spelling of 2821006 in words is "two million, eight hundred twenty-one thousand, six".