22172226 has 32 divisors (see below), whose sum is σ = 45759168. Its totient is φ = 7157760.

The previous prime is 22172209. The next prime is 22172251. The reversal of 22172226 is 62227122.

It is a junction number, because it is equal to n+sod(n) for n = 22172196 and 22172205.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47245 + ... + 47711.

It is an arithmetic number, because the mean of its divisors is an integer number (1429974).

Almost surely, 2^22172226 is an apocalyptic number.

22172226 is an abundant number, since it is smaller than the sum of its proper divisors (23586942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22172226 is a wasteful number, since it uses less digits than its factorization.

22172226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706.

The product of its digits is 1344, while the sum is 24.

The square root of 22172226 is about 4708.7393217293. The cubic root of 22172226 is about 280.9332212148.

Adding to 22172226 its reverse (62227122), we get a palindrome (84399348).

The spelling of 22172226 in words is "twenty-two million, one hundred seventy-two thousand, two hundred twenty-six".