8222140 has 48 divisors (see below), whose sum is σ = 18232704. Its totient is φ = 3110400.

The previous prime is 8222131. The next prime is 8222141. The reversal of 8222140 is 412228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8222141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30205 + ... + 30475.

It is an arithmetic number, because the mean of its divisors is an integer number (379848).

Almost surely, 2^8222140 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 8222140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9116352).

8222140 is an abundant number, since it is smaller than the sum of its proper divisors (10010564).

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

8222140 is a wasteful number, since it uses less digits than its factorization.

8222140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358 (or 356 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 8222140 is about 2867.4274184363. The cubic root of 8222140 is about 201.8342920982.

Adding to 8222140 its reverse (412228), we get a palindrome (8634368).

It can be divided in two parts, 82 and 22140, that added together give a palindrome (22222).

The spelling of 8222140 in words is "eight million, two hundred twenty-two thousand, one hundred forty".