22681438 has 16 divisors (see below), whose sum is σ = 36933120. Its totient is φ = 10384416.

The previous prime is 22681433. The next prime is 22681457. The reversal of 22681438 is 83418622.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22681433) 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, 133 + ... + 6736.

It is an arithmetic number, because the mean of its divisors is an integer number (2308320).

Almost surely, 2^22681438 is an apocalyptic number.

22681438 is a deficient number, since it is larger than the sum of its proper divisors (14251682).

22681438 is a wasteful number, since it uses less digits than its factorization.

22681438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7011.

The product of its digits is 18432, while the sum is 34.

The square root of 22681438 is about 4762.5033333322. The cubic root of 22681438 is about 283.0676210946.

The spelling of 22681438 in words is "twenty-two million, six hundred eighty-one thousand, four hundred thirty-eight".