22228389 has 24 divisors (see below), whose sum is σ = 32927232. Its totient is φ = 14446080.

The previous prime is 22228361. The next prime is 22228391. The reversal of 22228389 is 98382222.

It is not a de Polignac number, because 22228389 - 2¹¹ = 22226341 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22228319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115077 + ... + 115269.

It is an arithmetic number, because the mean of its divisors is an integer number (1371968).

Almost surely, 2^22228389 is an apocalyptic number.

It is an amenable number.

22228389 is a deficient number, since it is larger than the sum of its proper divisors (10698843).

22228389 is a wasteful number, since it uses less digits than its factorization.

22228389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457 (or 454 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 22228389 is about 4714.6992480963. The cubic root of 22228389 is about 281.1702256711.

The spelling of 22228389 in words is "twenty-two million, two hundred twenty-eight thousand, three hundred eighty-nine".