12017228 has 6 divisors (see below), whose sum is σ = 21030156. Its totient is φ = 6008612.

The previous prime is 12017227. The next prime is 12017231. The reversal of 12017228 is 82271021.

It is not an unprimeable number, because it can be changed into a prime (12017221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1502150 + ... + 1502157.

It is an arithmetic number, because the mean of its divisors is an integer number (3505026).

Almost surely, 2^12017228 is an apocalyptic number.

It is an amenable number.

12017228 is a deficient number, since it is larger than the sum of its proper divisors (9012928).

12017228 is a wasteful number, since it uses less digits than its factorization.

12017228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3004311 (or 3004309 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 12017228 is about 3466.5873708880. The cubic root of 12017228 is about 229.0523579931.

Adding to 12017228 its reverse (82271021), we get a palindrome (94288249).

The spelling of 12017228 in words is "twelve million, seventeen thousand, two hundred twenty-eight".