22389938 has 4 divisors (see below), whose sum is σ = 33584910. Its totient is φ = 11194968.

The previous prime is 22389937. The next prime is 22389959. The reversal of 22389938 is 83998322.

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

It can be written as a sum of positive squares in only one way, i.e., 14341369 + 8048569 = 3787^2 + 2837^2 .

It is not an unprimeable number, because it can be changed into a prime (22389931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5597483 + ... + 5597486.

Almost surely, 2^22389938 is an apocalyptic number.

22389938 is a deficient number, since it is larger than the sum of its proper divisors (11194972).

22389938 is a wasteful number, since it uses less digits than its factorization.

22389938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11194971.

The product of its digits is 186624, while the sum is 44.

The square root of 22389938 is about 4731.8007143159. The cubic root of 22389938 is about 281.8497346755.

The spelling of 22389938 in words is "twenty-two million, three hundred eighty-nine thousand, nine hundred thirty-eight".