22009852 has 6 divisors (see below), whose sum is σ = 38517248. Its totient is φ = 11004924.

The previous prime is 22009831. The next prime is 22009853. The reversal of 22009852 is 25890022.

It is a self number, because there is not a number n which added to its sum of digits gives 22009852.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22009853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2751228 + ... + 2751235.

Almost surely, 2^22009852 is an apocalyptic number.

It is an amenable number.

22009852 is a deficient number, since it is larger than the sum of its proper divisors (16507396).

22009852 is a wasteful number, since it uses less digits than its factorization.

22009852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5502467 (or 5502465 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 22009852 is about 4691.4658690009. The cubic root of 22009852 is about 280.2457536288.

Adding to 22009852 its reverse (25890022), we get a palindrome (47899874).

The spelling of 22009852 in words is "twenty-two million, nine thousand, eight hundred fifty-two".