22644127 has 4 divisors (see below), whose sum is σ = 24702696. Its totient is φ = 20585560.

The previous prime is 22644107. The next prime is 22644131. The reversal of 22644127 is 72144622.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22644127 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22644095 and 22644104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22644107) 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, 1029268 + ... + 1029289.

It is an arithmetic number, because the mean of its divisors is an integer number (6175674).

Almost surely, 2^22644127 is an apocalyptic number.

22644127 is a deficient number, since it is larger than the sum of its proper divisors (2058569).

22644127 is a wasteful number, since it uses less digits than its factorization.

22644127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2058568.

The product of its digits is 5376, while the sum is 28.

The square root of 22644127 is about 4758.5845584585. The cubic root of 22644127 is about 282.9123203511.

Adding to 22644127 its reverse (72144622), we get a palindrome (94788749).

The spelling of 22644127 in words is "twenty-two million, six hundred forty-four thousand, one hundred twenty-seven".