22424427 has 24 divisors (see below), whose sum is σ = 34594560. Its totient is φ = 13955760.

The previous prime is 22424383. The next prime is 22424429. The reversal of 22424427 is 72442422.

It is not a de Polignac number, because 22424427 - 2⁷ = 22424299 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22424427.

It is not an unprimeable number, because it can be changed into a prime (22424429) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11218 + ... + 13064.

It is an arithmetic number, because the mean of its divisors is an integer number (1441440).

Almost surely, 2^22424427 is an apocalyptic number.

22424427 is a deficient number, since it is larger than the sum of its proper divisors (12170133).

22424427 is a wasteful number, since it uses less digits than its factorization.

22424427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1943 (or 1940 counting only the distinct ones).

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

The square root of 22424427 is about 4735.4436962126. The cubic root of 22424427 is about 281.9943789433.

Adding to 22424427 its reverse (72442422), we get a palindrome (94866849).

The spelling of 22424427 in words is "twenty-two million, four hundred twenty-four thousand, four hundred twenty-seven".