2883821 has 4 divisors (see below), whose sum is σ = 2890944. Its totient is φ = 2876700.

The previous prime is 2883799. The next prime is 2883823. The reversal of 2883821 is 1283882.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2883821 - 2¹⁴ = 2867437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2883823) 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, 2915 + ... + 3776.

It is an arithmetic number, because the mean of its divisors is an integer number (722736).

2^2883821 is an apocalyptic number.

It is an amenable number.

2883821 is a deficient number, since it is larger than the sum of its proper divisors (7123).

2883821 is an equidigital number, since it uses as much as digits as its factorization.

2883821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7122.

The product of its digits is 6144, while the sum is 32.

The square root of 2883821 is about 1698.1816746155. The cubic root of 2883821 is about 142.3386251575.

The spelling of 2883821 in words is "two million, eight hundred eighty-three thousand, eight hundred twenty-one".