22004401 has 4 divisors (see below), whose sum is σ = 22177792. Its totient is φ = 21831012.

The previous prime is 22004393. The next prime is 22004419. The reversal of 22004401 is 10440022.

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.

It is a cyclic number.

It is not a de Polignac number, because 22004401 - 2³ = 22004393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22004431) 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, 86505 + ... + 86758.

It is an arithmetic number, because the mean of its divisors is an integer number (5544448).

Almost surely, 2^22004401 is an apocalyptic number.

It is an amenable number.

22004401 is a deficient number, since it is larger than the sum of its proper divisors (173391).

22004401 is a wasteful number, since it uses less digits than its factorization.

22004401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173390.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 22004401 is about 4690.8848845394. The cubic root of 22004401 is about 280.2226163275. Note that the first 3 decimals are identical.

Adding to 22004401 its reverse (10440022), we get a palindrome (32444423).

It can be divided in two parts, 2200 and 4401, that multiplied together give a triangular number (9682200 = T₄₄₀₀).

The spelling of 22004401 in words is "twenty-two million, four thousand, four hundred one".