22643027 has 4 divisors (see below), whose sum is σ = 24701496. Its totient is φ = 20584560.

The previous prime is 22643021. The next prime is 22643039. The reversal of 22643027 is 72034622.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22643027 - 2²⁰ = 21594451 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22642987 and 22643005.

It is not an unprimeable number, because it can be changed into a prime (22643021) 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 3 ways as a sum of consecutive naturals, for example, 1029218 + ... + 1029239.

It is an arithmetic number, because the mean of its divisors is an integer number (6175374).

Almost surely, 2^22643027 is an apocalyptic number.

22643027 is a deficient number, since it is larger than the sum of its proper divisors (2058469).

22643027 is a wasteful number, since it uses less digits than its factorization.

22643027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2058468.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 22643027 is about 4758.4689764671. The cubic root of 22643027 is about 282.9077391987.

Adding to 22643027 its reverse (72034622), we get a palindrome (94677649).

The spelling of 22643027 in words is "twenty-two million, six hundred forty-three thousand, twenty-seven".