22722245 has 16 divisors (see below), whose sum is σ = 33559680. Its totient is φ = 14382144.

The previous prime is 22722223. The next prime is 22722247. The reversal of 22722245 is 54222722.

It is not a de Polignac number, because 22722245 - 2⁸ = 22721989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22722247) 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, 24515 + ... + 25424.

It is an arithmetic number, because the mean of its divisors is an integer number (2097480).

Almost surely, 2^22722245 is an apocalyptic number.

It is an amenable number.

22722245 is a deficient number, since it is larger than the sum of its proper divisors (10837435).

22722245 is a wasteful number, since it uses less digits than its factorization.

22722245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49964.

The product of its digits is 4480, while the sum is 26.

The square root of 22722245 is about 4766.7856045767. The cubic root of 22722245 is about 283.2372784737.

Adding to 22722245 its reverse (54222722), we get a palindrome (76944967).

The spelling of 22722245 in words is "twenty-two million, seven hundred twenty-two thousand, two hundred forty-five".