22002224 has 20 divisors (see below), whose sum is σ = 43111080. Its totient is φ = 10876800.

The previous prime is 22002217. The next prime is 22002257. The reversal of 22002224 is 42220022.

It is a junction number, because it is equal to n+sod(n) for n = 22002199 and 22002208.

It is an unprimeable number.

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, 6302 + ... + 9149.

It is an arithmetic number, because the mean of its divisors is an integer number (2155554).

Almost surely, 2^22002224 is an apocalyptic number.

It is an amenable number.

22002224 is a deficient number, since it is larger than the sum of its proper divisors (21108856).

22002224 is a wasteful number, since it uses less digits than its factorization.

22002224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15548 (or 15542 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 22002224 is about 4690.6528330287. The cubic root of 22002224 is about 280.2133747708.

Adding to 22002224 its reverse (42220022), we get a palindrome (64222246).

The spelling of 22002224 in words is "twenty-two million, two thousand, two hundred twenty-four".