22207447 has 8 divisors (see below), whose sum is σ = 23420160. Its totient is φ = 20999160.

The previous prime is 22207421. The next prime is 22207481. The reversal of 22207447 is 74470222.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22207447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22207487) 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, 16668 + ... + 17950.

It is an arithmetic number, because the mean of its divisors is an integer number (2927520).

Almost surely, 2^22207447 is an apocalyptic number.

22207447 is a deficient number, since it is larger than the sum of its proper divisors (1212713).

22207447 is a wasteful number, since it uses less digits than its factorization.

22207447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2213.

The product of its (nonzero) digits is 6272, while the sum is 28.

The square root of 22207447 is about 4712.4777983562. The cubic root of 22207447 is about 281.0818984273.

Adding to 22207447 its reverse (74470222), we get a palindrome (96677669).

The spelling of 22207447 in words is "twenty-two million, two hundred seven thousand, four hundred forty-seven".