22236645 has 8 divisors (see below), whose sum is σ = 35578656. Its totient is φ = 11859536.

The previous prime is 22236581. The next prime is 22236647. The reversal of 22236645 is 54663222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22236645 - 2⁶ = 22236581 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22236647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 741207 + ... + 741236.

It is an arithmetic number, because the mean of its divisors is an integer number (4447332).

Almost surely, 2^22236645 is an apocalyptic number.

It is an amenable number.

22236645 is a deficient number, since it is larger than the sum of its proper divisors (13342011).

22236645 is a wasteful number, since it uses less digits than its factorization.

22236645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1482451.

The product of its digits is 17280, while the sum is 30.

The square root of 22236645 is about 4715.5747263722. The cubic root of 22236645 is about 281.2050318229.

Adding to 22236645 its reverse (54663222), we get a palindrome (76899867).

The spelling of 22236645 in words is "twenty-two million, two hundred thirty-six thousand, six hundred forty-five".