8221460 has 48 divisors (see below), whose sum is σ = 18834816. Its totient is φ = 2996352.

The previous prime is 8221453. The next prime is 8221463. The reversal of 8221460 is 641228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8221463) 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 15 ways as a sum of consecutive naturals, for example, 26627 + ... + 26933.

It is an arithmetic number, because the mean of its divisors is an integer number (392392).

Almost surely, 2^8221460 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 8221460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9417408).

8221460 is an abundant number, since it is smaller than the sum of its proper divisors (10613356).

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

8221460 is a wasteful number, since it uses less digits than its factorization.

8221460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432 (or 430 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 8221460 is about 2867.3088428002. The cubic root of 8221460 is about 201.8287278087.

Adding to 8221460 its product of nonzero digits (768), we get a palindrome (8222228).

Adding to 8221460 its reverse (641228), we get a palindrome (8862688).

The spelling of 8221460 in words is "eight million, two hundred twenty-one thousand, four hundred sixty".