22275438 has 8 divisors (see below), whose sum is σ = 44550888. Its totient is φ = 7425144.

The previous prime is 22275437. The next prime is 22275493. The reversal of 22275438 is 83457222.

It is a sphenic number, since it is the product of 3 distinct primes.

22275438 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 22275399 and 22275408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22275437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1856281 + ... + 1856292.

It is an arithmetic number, because the mean of its divisors is an integer number (5568861).

Almost surely, 2^22275438 is an apocalyptic number.

22275438 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22275438 is a wasteful number, since it uses less digits than its factorization.

22275438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3712578.

The product of its digits is 26880, while the sum is 33.

The square root of 22275438 is about 4719.6862183836. The cubic root of 22275438 is about 281.3684624917.

The spelling of 22275438 in words is "twenty-two million, two hundred seventy-five thousand, four hundred thirty-eight".