8641228 has 12 divisors (see below), whose sum is σ = 15149232. Its totient is φ = 4312880.

The previous prime is 8641211. The next prime is 8641231. The reversal of 8641228 is 8221468.

8641228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 8641228.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1113 + ... + 4303.

It is an arithmetic number, because the mean of its divisors is an integer number (1262436).

Almost surely, 2^8641228 is an apocalyptic number.

It is an amenable number.

8641228 is a deficient number, since it is larger than the sum of its proper divisors (6508004).

8641228 is a wasteful number, since it uses less digits than its factorization.

8641228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3872 (or 3870 counting only the distinct ones).

The product of its digits is 6144, while the sum is 31.

The square root of 8641228 is about 2939.5965709600. The cubic root of 8641228 is about 205.2068346706.

It can be divided in two parts, 86 and 41228, that added together give a palindrome (41314).

The spelling of 8641228 in words is "eight million, six hundred forty-one thousand, two hundred twenty-eight".