22424247 has 18 divisors (see below), whose sum is σ = 33050472. Its totient is φ = 14650896.

The previous prime is 22424239. The next prime is 22424249. The reversal of 22424247 is 74242422.

It is not a de Polignac number, because 22424247 - 2³ = 22424239 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22424247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22424249) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 24838 + ... + 25724.

Almost surely, 2^22424247 is an apocalyptic number.

22424247 is a deficient number, since it is larger than the sum of its proper divisors (10626225).

22424247 is an equidigital number, since it uses as much as digits as its factorization.

22424247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999 (or 943 counting only the distinct ones).

The product of its digits is 7168, while the sum is 27.

The square root of 22424247 is about 4735.4246905637. The cubic root of 22424247 is about 281.9936244220.

Adding to 22424247 its reverse (74242422), we get a palindrome (96666669).

It can be divided in two parts, 2 and 2424247, that added together give a square (2424249 = 1557²).

The spelling of 22424247 in words is "twenty-two million, four hundred twenty-four thousand, two hundred forty-seven".