22438423 has 12 divisors (see below), whose sum is σ = 26533272. Its totient is φ = 18915120.

The previous prime is 22438421. The next prime is 22438433. The reversal of 22438423 is 32483422.

It is not a de Polignac number, because 22438423 - 2¹ = 22438421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22438391 and 22438400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22438421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 765 + ... + 6742.

It is an arithmetic number, because the mean of its divisors is an integer number (2211106).

Almost surely, 2^22438423 is an apocalyptic number.

22438423 is a deficient number, since it is larger than the sum of its proper divisors (4094849).

22438423 is an equidigital number, since it uses as much as digits as its factorization.

22438423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7582 (or 7575 counting only the distinct ones).

The product of its digits is 9216, while the sum is 28.

The square root of 22438423 is about 4736.9212575258. The cubic root of 22438423 is about 282.0530348084.

The spelling of 22438423 in words is "twenty-two million, four hundred thirty-eight thousand, four hundred twenty-three".