22238867 has 4 divisors (see below), whose sum is σ = 25415856. Its totient is φ = 19061880.

The previous prime is 22238819. The next prime is 22238891. The reversal of 22238867 is 76883222.

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-22238867 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22238867.

It is not an unprimeable number, because it can be changed into a prime (22235867) 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 3 ways as a sum of consecutive naturals, for example, 1588484 + ... + 1588497.

It is an arithmetic number, because the mean of its divisors is an integer number (6353964).

Almost surely, 2^22238867 is an apocalyptic number.

22238867 is a deficient number, since it is larger than the sum of its proper divisors (3176989).

22238867 is an equidigital number, since it uses as much as digits as its factorization.

22238867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3176988.

The product of its digits is 64512, while the sum is 38.

The square root of 22238867 is about 4715.8103227335. The cubic root of 22238867 is about 281.2143979956.

The spelling of 22238867 in words is "twenty-two million, two hundred thirty-eight thousand, eight hundred sixty-seven".