22438413 has 24 divisors (see below), whose sum is σ = 33204600. Its totient is φ = 14598144.

The previous prime is 22438399. The next prime is 22438421. The reversal of 22438413 is 31483422.

22438413 is a `hidden beast` number, since 2 + 243 + 8 + 413 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 8398404 + 14040009 = 2898^2 + 3747^2 .

It is not a de Polignac number, because 22438413 - 2²¹ = 20341261 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22438433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87181 + ... + 87437.

It is an arithmetic number, because the mean of its divisors is an integer number (1383525).

Almost surely, 2^22438413 is an apocalyptic number.

It is an amenable number.

22438413 is a deficient number, since it is larger than the sum of its proper divisors (10766187).

22438413 is a wasteful number, since it uses less digits than its factorization.

22438413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461 (or 458 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 22438413 is about 4736.9202019878. The cubic root of 22438413 is about 282.0529929081.

The spelling of 22438413 in words is "twenty-two million, four hundred thirty-eight thousand, four hundred thirteen".