7220822 has 8 divisors (see below), whose sum is σ = 12378576. Its totient is φ = 3094632.

The previous prime is 7220821. The next prime is 7220849. The reversal of 7220822 is 2280227.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7220821) 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 in 3 ways as a sum of consecutive naturals, for example, 257873 + ... + 257900.

It is an arithmetic number, because the mean of its divisors is an integer number (1547322).

Almost surely, 2^7220822 is an apocalyptic number.

7220822 is a deficient number, since it is larger than the sum of its proper divisors (5157754).

7220822 is a wasteful number, since it uses less digits than its factorization.

7220822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515782.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 7220822 is about 2687.1587225171. The cubic root of 7220822 is about 193.2838405481.

The spelling of 7220822 in words is "seven million, two hundred twenty thousand, eight hundred twenty-two".