11117228 has 12 divisors (see below), whose sum is σ = 19494552. Its totient is φ = 5547360.

The previous prime is 11117213. The next prime is 11117321. The reversal of 11117228 is 82271111.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 353 + ... + 4728.

It is an arithmetic number, because the mean of its divisors is an integer number (1624546).

Almost surely, 2^11117228 is an apocalyptic number.

It is an amenable number.

11117228 is a deficient number, since it is larger than the sum of its proper divisors (8377324).

11117228 is a wasteful number, since it uses less digits than its factorization.

11117228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5632 (or 5630 counting only the distinct ones).

The product of its digits is 224, while the sum is 23.

The square root of 11117228 is about 3334.2507404213. The cubic root of 11117228 is about 223.1852576518.

Adding to 11117228 its reverse (82271111), we get a palindrome (93388339).

It can be divided in two parts, 1111 and 7228, that multiplied together give a palindrome (8030308).

The spelling of 11117228 in words is "eleven million, one hundred seventeen thousand, two hundred twenty-eight".