22041865 has 8 divisors (see below), whose sum is σ = 26513928. Its totient is φ = 17591040.

The previous prime is 22041863. The next prime is 22041917. The reversal of 22041865 is 56814022.

It can be written as a sum of positive squares in 4 ways, for example, as 484416 + 21557449 = 696^2 + 4643^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22041865 - 2¹ = 22041863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22041863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2926 + ... + 7255.

It is an arithmetic number, because the mean of its divisors is an integer number (3314241).

Almost surely, 2^22041865 is an apocalyptic number.

It is an amenable number.

22041865 is a deficient number, since it is larger than the sum of its proper divisors (4472063).

22041865 is a wasteful number, since it uses less digits than its factorization.

22041865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10619.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 22041865 is about 4694.8764626985. The cubic root of 22041865 is about 280.3815588912.

Adding to 22041865 its reverse (56814022), we get a palindrome (78855887).

The spelling of 22041865 in words is "twenty-two million, forty-one thousand, eight hundred sixty-five".