11312228 has 24 divisors (see below), whose sum is σ = 21168000. Its totient is φ = 5276480.

The previous prime is 11312221. The next prime is 11312261. The reversal of 11312228 is 82221311.

11312228 = T₁₃₇ + T₁₃₈ + ... + T₄₁₂.

It is not an unprimeable number, because it can be changed into a prime (11312221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2273 + ... + 5271.

It is an arithmetic number, because the mean of its divisors is an integer number (882000).

Almost surely, 2^11312228 is an apocalyptic number.

It is an amenable number.

11312228 is a deficient number, since it is larger than the sum of its proper divisors (9855772).

11312228 is a wasteful number, since it uses less digits than its factorization.

11312228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3067 (or 3065 counting only the distinct ones).

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

The square root of 11312228 is about 3363.3655763238. The cubic root of 11312228 is about 224.4826169612.

Adding to 11312228 its reverse (82221311), we get a palindrome (93533539).

The spelling of 11312228 in words is "eleven million, three hundred twelve thousand, two hundred twenty-eight".