22204245 has 16 divisors (see below), whose sum is σ = 40602240. Its totient is φ = 10150464.

The previous prime is 22204241. The next prime is 22204249. The reversal of 22204245 is 54240222.

It is an interprime number because it is at equal distance from previous prime (22204241) and next prime (22204249).

It is not a de Polignac number, because 22204245 - 2² = 22204241 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22204241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105630 + ... + 105839.

It is an arithmetic number, because the mean of its divisors is an integer number (2537640).

Almost surely, 2^22204245 is an apocalyptic number.

It is an amenable number.

22204245 is a deficient number, since it is larger than the sum of its proper divisors (18397995).

22204245 is a wasteful number, since it uses less digits than its factorization.

22204245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211484.

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 22204245 is about 4712.1380497604. The cubic root of 22204245 is about 281.0683884322.

Adding to 22204245 its reverse (54240222), we get a palindrome (76444467).

The spelling of 22204245 in words is "twenty-two million, two hundred four thousand, two hundred forty-five".