622422 has 24 divisors (see below), whose sum is σ = 1363440. Its totient is φ = 205200.

The previous prime is 622399. The next prime is 622423. The reversal of 622422 is 224226.

It is a happy number.

622422 is a `hidden beast` number, since 622 + 42 + 2 = 666.

622422 is nontrivially palindromic in base 15.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 622395 and 622404.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 622422.

It is not an unprimeable number, because it can be changed into a prime (622423) by changing a digit.

622422 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 11 ways as a sum of consecutive naturals, for example, 2604 + ... + 2832.

It is an arithmetic number, because the mean of its divisors is an integer number (56810).

2⁶²²⁴²² is an apocalyptic number.

622422 is an abundant number, since it is smaller than the sum of its proper divisors (741018).

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

622422 is a wasteful number, since it uses less digits than its factorization.

622422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388 (or 385 counting only the distinct ones).

The product of its digits is 384, while the sum is 18.

The square root of 622422 is about 788.9372598629. The cubic root of 622422 is about 85.3810801855.

Adding to 622422 its reverse (224226), we get a palindrome (846648).

The spelling of 622422 in words is "six hundred twenty-two thousand, four hundred twenty-two".