622288 has 40 divisors (see below), whose sum is σ = 1339200. Its totient is φ = 278784.

The previous prime is 622277. The next prime is 622301. The reversal of 622288 is 882226.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

622288 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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6948 + ... + 7036.

It is an arithmetic number, because the mean of its divisors is an integer number (33480).

2⁶²²²⁸⁸ 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 622288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (669600).

622288 is an abundant number, since it is smaller than the sum of its proper divisors (716912).

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

622288 is a wasteful number, since it uses less digits than its factorization.

622288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 133 counting only the distinct ones).

The product of its digits is 3072, while the sum is 28.

The square root of 622288 is about 788.8523309213. The cubic root of 622288 is about 85.3749525712.

The spelling of 622288 in words is "six hundred twenty-two thousand, two hundred eighty-eight".