11239228 has 72 divisors (see below), whose sum is σ = 26946864. Its totient is φ = 4032000.

The previous prime is 11239223. The next prime is 11239237. The reversal of 11239228 is 82293211.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 11239196 and 11239205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11239223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27828 + ... + 28228.

It is an arithmetic number, because the mean of its divisors is an integer number (374262).

Almost surely, 2^11239228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11239228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13473432).

11239228 is an abundant number, since it is smaller than the sum of its proper divisors (15707636).

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

11239228 is a wasteful number, since it uses less digits than its factorization.

11239228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443 (or 434 counting only the distinct ones).

The product of its digits is 1728, while the sum is 28.

The square root of 11239228 is about 3352.4957867237. The cubic root of 11239228 is about 223.9986979091.

It can be divided in two parts, 112 and 39228, that added together give a triangular number (39340 = T₂₈₀).

The spelling of 11239228 in words is "eleven million, two hundred thirty-nine thousand, two hundred twenty-eight".