622428 has 12 divisors (see below), whose sum is σ = 1452360. Its totient is φ = 207472.

The previous prime is 622423. The next prime is 622477. The reversal of 622428 is 824226.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 622398 and 622407.

It is a congruent number.

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

622428 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 3 ways as a sum of consecutive naturals, for example, 25923 + ... + 25946.

It is an arithmetic number, because the mean of its divisors is an integer number (121030).

2⁶²²⁴²⁸ is an apocalyptic number.

It is an amenable number.

622428 is an abundant number, since it is smaller than the sum of its proper divisors (829932).

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

622428 is a wasteful number, since it uses less digits than its factorization.

622428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51876 (or 51874 counting only the distinct ones).

The product of its digits is 1536, while the sum is 24.

The square root of 622428 is about 788.9410624375. The cubic root of 622428 is about 85.3813545357.

The spelling of 622428 in words is "six hundred twenty-two thousand, four hundred twenty-eight".