22220305 has 8 divisors (see below), whose sum is σ = 26740800. Its totient is φ = 17725296.

The previous prime is 22220299. The next prime is 22220321. The reversal of 22220305 is 50302222.

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 22220305 - 2¹¹ = 22218257 is a prime.

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, 4395 + ... + 7984.

It is an arithmetic number, because the mean of its divisors is an integer number (3342600).

Almost surely, 2^22220305 is an apocalyptic number.

It is an amenable number.

22220305 is a deficient number, since it is larger than the sum of its proper divisors (4520495).

22220305 is a wasteful number, since it uses less digits than its factorization.

22220305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12743.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 22220305 is about 4713.8418513989. The cubic root of 22220305 is about 281.1361362955.

Adding to 22220305 its reverse (50302222), we get a palindrome (72522527).

The spelling of 22220305 in words is "twenty-two million, two hundred twenty thousand, three hundred five".