2211428 has 18 divisors (see below), whose sum is σ = 4113186. Its totient is φ = 1040128.

The previous prime is 2211413. The next prime is 2211439. The reversal of 2211428 is 8241122.

It is a happy number.

2211428 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 3 ways, for example, as 1350244 + 861184 = 1162^2 + 928^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 200 + ... + 2112.

2^2211428 is an apocalyptic number.

It is an amenable number.

2211428 is a deficient number, since it is larger than the sum of its proper divisors (1901758).

2211428 is a wasteful number, since it uses less digits than its factorization.

2211428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1951 (or 1932 counting only the distinct ones).

The product of its digits is 256, while the sum is 20.

The square root of 2211428 is about 1487.0870855468. The cubic root of 2211428 is about 130.2839552500.

The spelling of 2211428 in words is "two million, two hundred eleven thousand, four hundred twenty-eight".