22284289 has 4 divisors (see below), whose sum is σ = 22304340. Its totient is φ = 22264240.

The previous prime is 22284239. The next prime is 22284299. The reversal of 22284289 is 98248222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98248222 = 2 ⋅49124111.

It can be written as a sum of positive squares in 2 ways, for example, as 21233664 + 1050625 = 4608^2 + 1025^2 .

It is a cyclic number.

It is not a de Polignac number, because 22284289 - 2¹³ = 22276097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22284239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8254 + ... + 10615.

It is an arithmetic number, because the mean of its divisors is an integer number (5576085).

Almost surely, 2^22284289 is an apocalyptic number.

It is an amenable number.

22284289 is a deficient number, since it is larger than the sum of its proper divisors (20051).

22284289 is a wasteful number, since it uses less digits than its factorization.

22284289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20050.

The product of its digits is 36864, while the sum is 37.

The square root of 22284289 is about 4720.6237935256. The cubic root of 22284289 is about 281.4057241980.

The spelling of 22284289 in words is "twenty-two million, two hundred eighty-four thousand, two hundred eighty-nine".