84220 has 12 divisors (see below), whose sum is σ = 176904. Its totient is φ = 33680.

The previous prime is 84211. The next prime is 84221. The reversal of 84220 is 2248.

It is a plaindrome in base 14.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 84194 and 84203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84221) 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, 2086 + ... + 2125.

It is an arithmetic number, because the mean of its divisors is an integer number (14742).

2⁸⁴²²⁰ is an apocalyptic number.

It is an amenable number.

84220 is an abundant number, since it is smaller than the sum of its proper divisors (92684).

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 (88452).

84220 is a wasteful number, since it uses less digits than its factorization.

84220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4220 (or 4218 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 84220 is about 290.2068228006. The cubic root of 84220 is about 43.8333919658.

Adding to 84220 its product of nonzero digits (128), we get a palindrome (84348).

Adding to 84220 its reverse (2248), we get a palindrome (86468).

The spelling of 84220 in words is "eighty-four thousand, two hundred twenty".