22172852 has 12 divisors (see below), whose sum is σ = 41787396. Its totient is φ = 10233600.

The previous prime is 22172827. The next prime is 22172893. The reversal of 22172852 is 25827122.

It can be written as a sum of positive squares in 2 ways, for example, as 6522916 + 15649936 = 2554^2 + 3956^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213149 + ... + 213252.

It is an arithmetic number, because the mean of its divisors is an integer number (3482283).

Almost surely, 2^22172852 is an apocalyptic number.

It is an amenable number.

22172852 is a deficient number, since it is larger than the sum of its proper divisors (19614544).

22172852 is a wasteful number, since it uses less digits than its factorization.

22172852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426418 (or 426416 counting only the distinct ones).

The product of its digits is 4480, while the sum is 29.

The square root of 22172852 is about 4708.8057934045. The cubic root of 22172852 is about 280.9358651012.

Adding to 22172852 its reverse (25827122), we get a palindrome (47999974).

The spelling of 22172852 in words is "twenty-two million, one hundred seventy-two thousand, eight hundred fifty-two".