22338161 has 4 divisors (see below), whose sum is σ = 22348800. Its totient is φ = 22327524.

The previous prime is 22338143. The next prime is 22338163. The reversal of 22338161 is 16183322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22338161 - 2¹⁰ = 22337137 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 22338161.

It is not an unprimeable number, because it can be changed into a prime (22338163) 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, 1001 + ... + 6758.

It is an arithmetic number, because the mean of its divisors is an integer number (5587200).

Almost surely, 2^22338161 is an apocalyptic number.

It is an amenable number.

22338161 is a deficient number, since it is larger than the sum of its proper divisors (10639).

22338161 is an equidigital number, since it uses as much as digits as its factorization.

22338161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10638.

The product of its digits is 1728, while the sum is 26.

The square root of 22338161 is about 4726.3263746804. The cubic root of 22338161 is about 281.6323066910.

The spelling of 22338161 in words is "twenty-two million, three hundred thirty-eight thousand, one hundred sixty-one".