22602218 has 4 divisors (see below), whose sum is σ = 33903330. Its totient is φ = 11301108.

The previous prime is 22602179. The next prime is 22602233. The reversal of 22602218 is 81220622.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20313049 + 2289169 = 4507^2 + 1513^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22602193 and 22602202.

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 as a sum of consecutive naturals, namely, 5650553 + ... + 5650556.

Almost surely, 2^22602218 is an apocalyptic number.

22602218 is a deficient number, since it is larger than the sum of its proper divisors (11301112).

22602218 is a wasteful number, since it uses less digits than its factorization.

22602218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11301111.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 22602218 is about 4754.1790037818. The cubic root of 22602218 is about 282.7376776495.

The spelling of 22602218 in words is "twenty-two million, six hundred two thousand, two hundred eighteen".