7220422 has 16 divisors (see below), whose sum is σ = 12068352. Its totient is φ = 3211720.

The previous prime is 7220417. The next prime is 7220441. The reversal of 7220422 is 2240227.

It is a self number, because there is not a number n which added to its sum of digits gives 7220422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2458 + ... + 4525.

It is an arithmetic number, because the mean of its divisors is an integer number (754272).

Almost surely, 2^7220422 is an apocalyptic number.

7220422 is a deficient number, since it is larger than the sum of its proper divisors (4847930).

7220422 is a wasteful number, since it uses less digits than its factorization.

7220422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7043.

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 7220422 is about 2687.0842934303. The cubic root of 7220422 is about 193.2802714732.

Adding to 7220422 its reverse (2240227), we get a palindrome (9460649).

The spelling of 7220422 in words is "seven million, two hundred twenty thousand, four hundred twenty-two".