11222028 has 36 divisors (see below), whose sum is σ = 29062488. Its totient is φ = 3648960.

The previous prime is 11222021. The next prime is 11222033. The reversal of 11222028 is 82022211.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 11222028.

It is not an unprimeable number, because it can be changed into a prime (11222021) 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 11 ways as a sum of consecutive naturals, for example, 2326 + ... + 5277.

Almost surely, 2^11222028 is an apocalyptic number.

11222028 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11222028 is an abundant number, since it is smaller than the sum of its proper divisors (17840460).

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

11222028 is a wasteful number, since it uses less digits than its factorization.

11222028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7654 (or 7649 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 11222028 is about 3349.9295514981. The cubic root of 11222028 is about 223.8843737862.

Adding to 11222028 its reverse (82022211), we get a palindrome (93244239).

The spelling of 11222028 in words is "eleven million, two hundred twenty-two thousand, twenty-eight".