16220 has 12 divisors (see below), whose sum is σ = 34104. Its totient is φ = 6480.

The previous prime is 16217. The next prime is 16223. The reversal of 16220 is 2261.

It is an interprime number because it is at equal distance from previous prime (16217) and next prime (16223).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386 + ... + 425.

It is an arithmetic number, because the mean of its divisors is an integer number (2842).

2¹⁶²²⁰ is an apocalyptic number.

16220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16220 is an abundant number, since it is smaller than the sum of its proper divisors (17884).

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 (17052).

16220 is a wasteful number, since it uses less digits than its factorization.

16220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820 (or 818 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 16220 is about 127.3577637995. The cubic root of 16220 is about 25.3133884259.

Adding to 16220 its reverse (2261), we get a palindrome (18481).

It can be divided in two parts, 162 and 20, that multiplied together give a triangular number (3240 = T₈₀).

The spelling of 16220 in words is "sixteen thousand, two hundred twenty".