22200305 has 8 divisors (see below), whose sum is σ = 26904744. Its totient is φ = 17584000.

The previous prime is 22200289. The next prime is 22200307. The reversal of 22200305 is 50300222.

It can be written as a sum of positive squares in 4 ways, for example, as 11336689 + 10863616 = 3367^2 + 3296^2 .

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

It is not a de Polignac number, because 22200305 - 2⁴ = 22200289 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22200305.

It is not an unprimeable number, because it can be changed into a prime (22200307) 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, 21476 + ... + 22485.

It is an arithmetic number, because the mean of its divisors is an integer number (3363093).

Almost surely, 2^22200305 is an apocalyptic number.

It is an amenable number.

22200305 is a deficient number, since it is larger than the sum of its proper divisors (4704439).

22200305 is a wasteful number, since it uses less digits than its factorization.

22200305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44067.

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 22200305 is about 4711.7199619672. The cubic root of 22200305 is about 281.0517628582.

Adding to 22200305 its reverse (50300222), we get a palindrome (72500527).

The spelling of 22200305 in words is "twenty-two million, two hundred thousand, three hundred five".