11231228 has 12 divisors (see below), whose sum is σ = 19892040. Its totient is φ = 5547792.

The previous prime is 11231219. The next prime is 11231243. The reversal of 11231228 is 82213211.

It is a super-2 number, since 2×11231228² = 252280964775968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16583 + ... + 17246.

It is an arithmetic number, because the mean of its divisors is an integer number (1657670).

Almost surely, 2^11231228 is an apocalyptic number.

It is an amenable number.

11231228 is a deficient number, since it is larger than the sum of its proper divisors (8660812).

11231228 is a wasteful number, since it uses less digits than its factorization.

11231228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33916 (or 33914 counting only the distinct ones).

The product of its digits is 192, while the sum is 20.

The square root of 11231228 is about 3351.3024333832. The cubic root of 11231228 is about 223.9455384179.

Adding to 11231228 its reverse (82213211), we get a palindrome (93444439).

The spelling of 11231228 in words is "eleven million, two hundred thirty-one thousand, two hundred twenty-eight".