8221450 has 12 divisors (see below), whose sum is σ = 15291990. Its totient is φ = 3288560.

The previous prime is 8221439. The next prime is 8221453. The reversal of 8221450 is 541228.

It can be written as a sum of positive squares in 3 ways, for example, as 3279721 + 4941729 = 1811^2 + 2223^2 .

It is not an unprimeable number, because it can be changed into a prime (8221453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 82165 + ... + 82264.

Almost surely, 2^8221450 is an apocalyptic number.

8221450 is a deficient number, since it is larger than the sum of its proper divisors (7070540).

8221450 is a wasteful number, since it uses less digits than its factorization.

8221450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164441 (or 164436 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 8221450 is about 2867.3070990042. The cubic root of 8221450 is about 201.8286459786.

Adding to 8221450 its reverse (541228), we get a palindrome (8762678).

The spelling of 8221450 in words is "eight million, two hundred twenty-one thousand, four hundred fifty".