22438134 has 48 divisors (see below), whose sum is σ = 50935248. Its totient is φ = 7402752.

The previous prime is 22438127. The next prime is 22438139. The reversal of 22438134 is 43183422.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22438098 and 22438107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22438139) 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 23 ways as a sum of consecutive naturals, for example, 66414 + ... + 66750.

It is an arithmetic number, because the mean of its divisors is an integer number (1061151).

Almost surely, 2^22438134 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22438134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25467624).

22438134 is an abundant number, since it is smaller than the sum of its proper divisors (28497114).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22438134 is a wasteful number, since it uses less digits than its factorization.

22438134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491 (or 479 counting only the distinct ones).

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

The square root of 22438134 is about 4736.8907523818. The cubic root of 22438134 is about 282.0518238844.

The spelling of 22438134 in words is "twenty-two million, four hundred thirty-eight thousand, one hundred thirty-four".