11288228 has 18 divisors (see below), whose sum is σ = 22980006. Its totient is φ = 4837728.

The previous prime is 11288213. The next prime is 11288237. The reversal of 11288228 is 82288211.

11288228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 8076964 + 3211264 = 2842^2 + 1792^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11288194 and 11288203.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28601 + ... + 28992.

It is an arithmetic number, because the mean of its divisors is an integer number (1276667).

Almost surely, 2^11288228 is an apocalyptic number.

It is an amenable number.

11288228 is an abundant number, since it is smaller than the sum of its proper divisors (11691778).

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

11288228 is a wasteful number, since it uses less digits than its factorization.

11288228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57611 (or 57602 counting only the distinct ones).

The product of its digits is 4096, while the sum is 32.

The square root of 11288228 is about 3359.7958271300. The cubic root of 11288228 is about 224.3237506029.

The spelling of 11288228 in words is "eleven million, two hundred eighty-eight thousand, two hundred twenty-eight".