11221828 has 6 divisors (see below), whose sum is σ = 19638206. Its totient is φ = 5610912.

The previous prime is 11221789. The next prime is 11221829. The reversal of 11221828 is 82812211.

11221828 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., 6240004 + 4981824 = 2498^2 + 2232^2 .

It is not an unprimeable number, because it can be changed into a prime (11221829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1402725 + ... + 1402732.

Almost surely, 2^11221828 is an apocalyptic number.

It is an amenable number.

11221828 is a deficient number, since it is larger than the sum of its proper divisors (8416378).

11221828 is a wasteful number, since it uses less digits than its factorization.

11221828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2805461 (or 2805459 counting only the distinct ones).

The product of its digits is 512, while the sum is 25.

The square root of 11221828 is about 3349.8996999910. The cubic root of 11221828 is about 223.8830437491.

The spelling of 11221828 in words is "eleven million, two hundred twenty-one thousand, eight hundred twenty-eight".