22845438 has 96 divisors (see below), whose sum is σ = 63078912. Its totient is φ = 5803200.

The previous prime is 22845437. The next prime is 22845443. The reversal of 22845438 is 83454822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22845437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 73303 + ... + 73613.

It is an arithmetic number, because the mean of its divisors is an integer number (657072).

Almost surely, 2^22845438 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22845438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31539456).

22845438 is an abundant number, since it is smaller than the sum of its proper divisors (40233474).

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

22845438 is a wasteful number, since it uses less digits than its factorization.

22845438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390 (or 387 counting only the distinct ones).

The product of its digits is 61440, while the sum is 36.

The square root of 22845438 is about 4779.6901573219. The cubic root of 22845438 is about 283.7482312115.

The spelling of 22845438 in words is "twenty-two million, eight hundred forty-five thousand, four hundred thirty-eight".