12002228 has 24 divisors (see below), whose sum is σ = 25049472. Its totient is φ = 4919904.

The previous prime is 12002213. The next prime is 12002231. The reversal of 12002228 is 82220021.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8675 + ... + 9962.

It is an arithmetic number, because the mean of its divisors is an integer number (1043728).

Almost surely, 2^12002228 is an apocalyptic number.

It is an amenable number.

12002228 is an abundant number, since it is smaller than the sum of its proper divisors (13047244).

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

12002228 is a wasteful number, since it uses less digits than its factorization.

12002228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18671 (or 18669 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 12002228 is about 3464.4231843122. The cubic root of 12002228 is about 228.9570166524.

Adding to 12002228 its reverse (82220021), we get a palindrome (94222249).

The spelling of 12002228 in words is "twelve million, two thousand, two hundred twenty-eight".