22144667 has 4 divisors (see below), whose sum is σ = 22160040. Its totient is φ = 22129296.

The previous prime is 22144657. The next prime is 22144679. The reversal of 22144667 is 76644122.

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 22144667 - 2⁴ = 22144651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22144657) 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, 5273 + ... + 8490.

It is an arithmetic number, because the mean of its divisors is an integer number (5540010).

Almost surely, 2^22144667 is an apocalyptic number.

22144667 is a deficient number, since it is larger than the sum of its proper divisors (15373).

22144667 is a wasteful number, since it uses less digits than its factorization.

22144667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15372.

The product of its digits is 16128, while the sum is 32.

The square root of 22144667 is about 4705.8120446954. The cubic root of 22144667 is about 280.8167775072.

Adding to 22144667 its reverse (76644122), we get a palindrome (98788789).

The spelling of 22144667 in words is "twenty-two million, one hundred forty-four thousand, six hundred sixty-seven".