22434421 has 16 divisors (see below), whose sum is σ = 24998400. Its totient is φ = 20044800.

The previous prime is 22434413. The next prime is 22434431. The reversal of 22434421 is 12443422.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22434421 - 2³ = 22434413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22434392 and 22434401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22434431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23685 + ... + 24613.

It is an arithmetic number, because the mean of its divisors is an integer number (1562400).

Almost surely, 2^22434421 is an apocalyptic number.

It is an amenable number.

22434421 is a deficient number, since it is larger than the sum of its proper divisors (2563979).

22434421 is a wasteful number, since it uses less digits than its factorization.

22434421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020.

The product of its digits is 1536, while the sum is 22.

The square root of 22434421 is about 4736.4988124141. The cubic root of 22434421 is about 282.0362653091.

Adding to 22434421 its reverse (12443422), we get a palindrome (34877843).

Subtracting from 22434421 its reverse (12443422), we obtain a palindrome (9990999).

The spelling of 22434421 in words is "twenty-two million, four hundred thirty-four thousand, four hundred twenty-one".