22128841 has 6 divisors (see below), whose sum is σ = 25741770. Its totient is φ = 18967536.

The previous prime is 22128839. The next prime is 22128851. The reversal of 22128841 is 14882122.

It can be written as a sum of positive squares in only one way, i.e., 22127616 + 1225 = 4704^2 + 35^2 .

It is not a de Polignac number, because 22128841 - 2¹ = 22128839 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22128811) 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 5 ways as a sum of consecutive naturals, for example, 225756 + ... + 225853.

It is an arithmetic number, because the mean of its divisors is an integer number (4290295).

Almost surely, 2^22128841 is an apocalyptic number.

It is an amenable number.

22128841 is a deficient number, since it is larger than the sum of its proper divisors (3612929).

22128841 is an equidigital number, since it uses as much as digits as its factorization.

22128841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451623 (or 451616 counting only the distinct ones).

The product of its digits is 2048, while the sum is 28.

The square root of 22128841 is about 4704.1302065313. The cubic root of 22128841 is about 280.7498650019.

The spelling of 22128841 in words is "twenty-two million, one hundred twenty-eight thousand, eight hundred forty-one".