2821822 has 4 divisors (see below), whose sum is σ = 4232736. Its totient is φ = 1410910.

The previous prime is 2821817. The next prime is 2821829. The reversal of 2821822 is 2281282.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2821829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 705454 + ... + 705457.

It is an arithmetic number, because the mean of its divisors is an integer number (1058184).

2^2821822 is an apocalyptic number.

2821822 is a deficient number, since it is larger than the sum of its proper divisors (1410914).

2821822 is a wasteful number, since it uses less digits than its factorization.

2821822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1410913.

The product of its digits is 1024, while the sum is 25.

The square root of 2821822 is about 1679.8279673824. The cubic root of 2821822 is about 141.3111850207.

The spelling of 2821822 in words is "two million, eight hundred twenty-one thousand, eight hundred twenty-two".