22231418 has 8 divisors (see below), whose sum is σ = 36378720. Its totient is φ = 10105180.

The previous prime is 22231403. The next prime is 22231421. The reversal of 22231418 is 81413222.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 22231393 and 22231402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505238 + ... + 505281.

It is an arithmetic number, because the mean of its divisors is an integer number (4547340).

Almost surely, 2^22231418 is an apocalyptic number.

22231418 is a deficient number, since it is larger than the sum of its proper divisors (14147302).

22231418 is a wasteful number, since it uses less digits than its factorization.

22231418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010532.

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

The square root of 22231418 is about 4715.0204665516. The cubic root of 22231418 is about 281.1829965161.

It can be divided in two parts, 222 and 31418, that multiplied together give a palindrome (6974796).

The spelling of 22231418 in words is "twenty-two million, two hundred thirty-one thousand, four hundred eighteen".