22172422 has 8 divisors (see below), whose sum is σ = 33520896. Its totient is φ = 10998792.

The previous prime is 22172413. The next prime is 22172441. The reversal of 22172422 is 22427122.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 22172393 and 22172402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43393 + ... + 43900.

It is an arithmetic number, because the mean of its divisors is an integer number (4190112).

Almost surely, 2^22172422 is an apocalyptic number.

22172422 is a deficient number, since it is larger than the sum of its proper divisors (11348474).

22172422 is a wasteful number, since it uses less digits than its factorization.

22172422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87422.

The product of its digits is 896, while the sum is 22.

The square root of 22172422 is about 4708.7601340480. The cubic root of 22172422 is about 280.9340490184.

Adding to 22172422 its reverse (22427122), we get a palindrome (44599544).

The spelling of 22172422 in words is "twenty-two million, one hundred seventy-two thousand, four hundred twenty-two".