22240208 has 20 divisors (see below), whose sum is σ = 43475268. Its totient is φ = 11020800.

The previous prime is 22240201. The next prime is 22240223. The reversal of 22240208 is 80204222.

It can be written as a sum of positive squares in 2 ways, for example, as 3125824 + 19114384 = 1768^2 + 4372^2 .

It is a Smith number, since the sum of its digits (20) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 22240208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22240201) 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 3 ways as a sum of consecutive naturals, for example, 4343 + ... + 7958.

Almost surely, 2^22240208 is an apocalyptic number.

It is an amenable number.

22240208 is a deficient number, since it is larger than the sum of its proper divisors (21235060).

22240208 is a wasteful number, since it uses less digits than its factorization.

22240208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12422 (or 12416 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 22240208 is about 4715.9525018812. The cubic root of 22240208 is about 281.2200502759.

The spelling of 22240208 in words is "twenty-two million, two hundred forty thousand, two hundred eight".