2836821 has 8 divisors (see below), whose sum is σ = 4073440. Its totient is φ = 1745712.

The previous prime is 2836817. The next prime is 2836849. The reversal of 2836821 is 1286382.

2836821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2836821 - 2² = 2836817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2836861) 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, 36331 + ... + 36408.

It is an arithmetic number, because the mean of its divisors is an integer number (509180).

2^2836821 is an apocalyptic number.

It is an amenable number.

2836821 is a deficient number, since it is larger than the sum of its proper divisors (1236619).

2836821 is a wasteful number, since it uses less digits than its factorization.

2836821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72755.

The product of its digits is 4608, while the sum is 30.

The square root of 2836821 is about 1684.2864958195. The cubic root of 2836821 is about 141.5611159950.

The spelling of 2836821 in words is "two million, eight hundred thirty-six thousand, eight hundred twenty-one".