84214220 has 48 divisors (see below), whose sum is σ = 182710080. Its totient is φ = 32580864.

The previous prime is 84214219. The next prime is 84214241. The reversal of 84214220 is 2241248.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234401 + ... + 234759.

It is an arithmetic number, because the mean of its divisors is an integer number (3806460).

Almost surely, 2^84214220 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 84214220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91355040).

84214220 is an abundant number, since it is smaller than the sum of its proper divisors (98495860).

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

84214220 is a wasteful number, since it uses less digits than its factorization.

84214220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722 (or 720 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 84214220 is about 9176.8306075682. The cubic root of 84214220 is about 438.3238918420.

Adding to 84214220 its reverse (2241248), we get a palindrome (86455468).

The spelling of 84214220 in words is "eighty-four million, two hundred fourteen thousand, two hundred twenty".