22438375 has 16 divisors (see below), whose sum is σ = 28398240. Its totient is φ = 17697600.

The previous prime is 22438337. The next prime is 22438379. The reversal of 22438375 is 57383422.

It is not a de Polignac number, because 22438375 - 2²³ = 14049767 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22438375.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22438379) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7896 + ... + 10354.

It is an arithmetic number, because the mean of its divisors is an integer number (1774890).

Almost surely, 2^22438375 is an apocalyptic number.

22438375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

22438375 is a deficient number, since it is larger than the sum of its proper divisors (5959865).

22438375 is an equidigital number, since it uses as much as digits as its factorization.

22438375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2547 (or 2537 counting only the distinct ones).

The product of its digits is 40320, while the sum is 34.

The square root of 22438375 is about 4736.9161909411. The cubic root of 22438375 is about 282.0528336868.

The spelling of 22438375 in words is "twenty-two million, four hundred thirty-eight thousand, three hundred seventy-five".