2382821 has 8 divisors (see below), whose sum is σ = 2779200. Its totient is φ = 2042124.

The previous prime is 2382817. The next prime is 2382829. The reversal of 2382821 is 1282832.

It is not a de Polignac number, because 2382821 - 2² = 2382817 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 (2382829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3131 + ... + 3816.

It is an arithmetic number, because the mean of its divisors is an integer number (347400).

2^2382821 is an apocalyptic number.

It is an amenable number.

2382821 is a deficient number, since it is larger than the sum of its proper divisors (396379).

2382821 is an frugal number, since it uses more digits than its factorization.

2382821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6968 (or 6954 counting only the distinct ones).

The product of its digits is 1536, while the sum is 26.

The square root of 2382821 is about 1543.6388826406. The cubic root of 2382821 is about 133.5663750881.

The spelling of 2382821 in words is "two million, three hundred eighty-two thousand, eight hundred twenty-one".