22222447 has 8 divisors (see below), whose sum is σ = 24116400. Its totient is φ = 20354880.

The previous prime is 22222433. The next prime is 22222471. The reversal of 22222447 is 74422222.

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

It is not a de Polignac number, because 22222447 - 2¹¹ = 22220399 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222427) 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, 4822 + ... + 8227.

It is an arithmetic number, because the mean of its divisors is an integer number (3014550).

Almost surely, 2^22222447 is an apocalyptic number.

22222447 is a deficient number, since it is larger than the sum of its proper divisors (1893953).

22222447 is a wasteful number, since it uses less digits than its factorization.

22222447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13193.

The product of its digits is 3584, while the sum is 25.

The square root of 22222447 is about 4714.0690491337. The cubic root of 22222447 is about 281.1451696887.

Adding to 22222447 its reverse (74422222), we get a palindrome (96644669).

The spelling of 22222447 in words is "twenty-two million, two hundred twenty-two thousand, four hundred forty-seven".