22000447 has 8 divisors (see below), whose sum is σ = 25172000. Its totient is φ = 18836064.

The previous prime is 22000441. The next prime is 22000453. The reversal of 22000447 is 74400022.

It is an interprime number because it is at equal distance from previous prime (22000441) and next prime (22000453).

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

It is a cyclic number.

It is not a de Polignac number, because 22000447 - 2¹⁹ = 21476159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22000441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9829 + ... + 11857.

It is an arithmetic number, because the mean of its divisors is an integer number (3146500).

Almost surely, 2^22000447 is an apocalyptic number.

22000447 is a deficient number, since it is larger than the sum of its proper divisors (3171553).

22000447 is a wasteful number, since it uses less digits than its factorization.

22000447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3585.

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 22000447 is about 4690.4634099415. The cubic root of 22000447 is about 280.2058307975.

Adding to 22000447 its reverse (74400022), we get a palindrome (96400469).

The spelling of 22000447 in words is "twenty-two million, four hundred forty-seven", and thus it is an aban number.