22280217 has 16 divisors (see below), whose sum is σ = 33111360. Its totient is φ = 13243392.

The previous prime is 22280213. The next prime is 22280243. The reversal of 22280217 is 71208222.

It is a happy number.

It is not a de Polignac number, because 22280217 - 2² = 22280213 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22280213) 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 15 ways as a sum of consecutive naturals, for example, 10528 + ... + 12465.

It is an arithmetic number, because the mean of its divisors is an integer number (2069460).

Almost surely, 2^22280217 is an apocalyptic number.

It is an amenable number.

22280217 is a deficient number, since it is larger than the sum of its proper divisors (10831143).

22280217 is a wasteful number, since it uses less digits than its factorization.

22280217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23032.

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 22280217 is about 4720.1924748891. The cubic root of 22280217 is about 281.3885827654.

Adding to 22280217 its reverse (71208222), we get a palindrome (93488439).

The spelling of 22280217 in words is "twenty-two million, two hundred eighty thousand, two hundred seventeen".