2721822 has 8 divisors (see below), whose sum is σ = 5443656. Its totient is φ = 907272.

The previous prime is 2721821. The next prime is 2721827. The reversal of 2721822 is 2281272.

It is a happy number.

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

2721822 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 2721792 and 2721801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2721821) 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, 226813 + ... + 226824.

It is an arithmetic number, because the mean of its divisors is an integer number (680457).

2^2721822 is an apocalyptic number.

2721822 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2721822 is a wasteful number, since it uses less digits than its factorization.

2721822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453642.

The product of its digits is 896, while the sum is 24.

The square root of 2721822 is about 1649.7945326616. The cubic root of 2721822 is about 139.6218023818.

The spelling of 2721822 in words is "two million, seven hundred twenty-one thousand, eight hundred twenty-two".