20622 has 16 divisors (see below), whose sum is σ = 47232.
Its totient is φ = 5880.
The previous prime is 20611. The next prime is 20627. The reversal of 20622 is 22602.
It is a nialpdrome in base 14.
It is a junction number, because it is equal to n+sod(n) for n = 20598 and 20607.
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 20622.
It is not an unprimeable number, because it can be changed into a prime (20627) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204 + ... + 287.
It is an arithmetic number, because the mean of its divisors is an integer number (2952).
220622 is an apocalyptic number.
20622 is an abundant number, since it is smaller than the sum of its proper divisors (26610).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23616).
20622 is a wasteful number, since it uses less digits than its factorization.
20622 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 503.
The product of its (nonzero) digits is 48, while the sum is 12.
The square root of 20622 is about 143.6036211243.
The cubic root of 20622 is about 27.4227030476.
The spelling of 20622 in words is "twenty thousand, six hundred twenty-two".