22230445 has 8 divisors (see below), whose sum is σ = 26723736. Its totient is φ = 17752896.

The previous prime is 22230421. The next prime is 22230463. The reversal of 22230445 is 54403222.

It can be written as a sum of positive squares in 4 ways, for example, as 131044 + 22099401 = 362^2 + 4701^2 .

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 22230445 - 2¹¹ = 22228397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 562 + ... + 6691.

It is an arithmetic number, because the mean of its divisors is an integer number (3340467).

Almost surely, 2^22230445 is an apocalyptic number.

It is an amenable number.

22230445 is a deficient number, since it is larger than the sum of its proper divisors (4493291).

22230445 is an equidigital number, since it uses as much as digits as its factorization.

22230445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7871.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 22230445 is about 4714.9172845343. The cubic root of 22230445 is about 281.1788942879.

Adding to 22230445 its reverse (54403222), we get a palindrome (76633667).

The spelling of 22230445 in words is "twenty-two million, two hundred thirty thousand, four hundred forty-five".