8042220 has 96 divisors (see below), whose sum is σ = 25583040. Its totient is φ = 2096640.

The previous prime is 8042213. The next prime is 8042239. The reversal of 8042220 is 222408.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 8042193 and 8042202.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28480 + ... + 28760.

It is an arithmetic number, because the mean of its divisors is an integer number (266490).

Almost surely, 2^8042220 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 8042220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12791520).

8042220 is an abundant number, since it is smaller than the sum of its proper divisors (17540820).

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

8042220 is a wasteful number, since it uses less digits than its factorization.

8042220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352 (or 344 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 8042220 is about 2835.8808155492. The cubic root of 8042220 is about 200.3512162082.

Adding to 8042220 its reverse (222408), we get a palindrome (8264628).

The spelling of 8042220 in words is "eight million, forty-two thousand, two hundred twenty".