11228 has 12 divisors (see below), whose sum is σ = 22512. Its totient is φ = 4800.

The previous prime is 11213. The next prime is 11239. The reversal of 11228 is 82211.

11228 = 37² + 38² + ... + 43².

11228 is an admirable number.

It is a hoax number, since the sum of its digits (14) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a plaindrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173 + ... + 228.

It is an arithmetic number, because the mean of its divisors is an integer number (1876).

2¹¹²²⁸ is an apocalyptic number.

It is an amenable number.

11228 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11256).

11228 is a wasteful number, since it uses less digits than its factorization.

11228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412 (or 410 counting only the distinct ones).

The product of its digits is 32, while the sum is 14.

The square root of 11228 is about 105.9622574316. The cubic root of 11228 is about 22.3924081415.

Adding to 11228 its reverse (82211), we get a palindrome (93439).

It can be divided in two parts, 112 and 28, that multiplied together give a square (3136 = 56²).

The spelling of 11228 in words is "eleven thousand, two hundred twenty-eight".