8321224 has 8 divisors (see below), whose sum is σ = 15602310. Its totient is φ = 4160608.

The previous prime is 8321213. The next prime is 8321227. The reversal of 8321224 is 4221238.

It can be written as a sum of positive squares in only one way, i.e., 6160324 + 2160900 = 2482^2 + 1470^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 8321195 and 8321204.

It is not an unprimeable number, because it can be changed into a prime (8321227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520069 + ... + 520084.

Almost surely, 2^8321224 is an apocalyptic number.

It is an amenable number.

8321224 is a deficient number, since it is larger than the sum of its proper divisors (7281086).

8321224 is a wasteful number, since it uses less digits than its factorization.

8321224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040159 (or 1040155 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

The square root of 8321224 is about 2884.6531853933. The cubic root of 8321224 is about 202.6418170325.

The spelling of 8321224 in words is "eight million, three hundred twenty-one thousand, two hundred twenty-four".