622128 has 40 divisors (see below), whose sum is σ = 1732528. Its totient is φ = 191232.

The previous prime is 622123. The next prime is 622129. The reversal of 622128 is 821226.

622128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622123) by changing a digit.

622128 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126 + ... + 1122.

2⁶²²¹²⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 622128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (866264).

622128 is an abundant number, since it is smaller than the sum of its proper divisors (1110400).

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

622128 is a wasteful number, since it uses less digits than its factorization.

622128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021 (or 1015 counting only the distinct ones).

The product of its digits is 384, while the sum is 21.

The square root of 622128 is about 788.7509112515. The cubic root of 622128 is about 85.3676348644.

The spelling of 622128 in words is "six hundred twenty-two thousand, one hundred twenty-eight".