22231422 has 40 divisors (see below), whose sum is σ = 50311800. Its totient is φ = 7336656.

The previous prime is 22231421. The next prime is 22231439. The reversal of 22231422 is 22413222.

It is a super-2 number, since 2×22231422² = 988472248284168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22231395 and 22231404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22231421) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 17029 + ... + 18287.

It is an arithmetic number, because the mean of its divisors is an integer number (1257795).

Almost surely, 2^22231422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22231422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25155900).

22231422 is an abundant number, since it is smaller than the sum of its proper divisors (28080378).

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

22231422 is a wasteful number, since it uses less digits than its factorization.

22231422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382 (or 1373 counting only the distinct ones).

The product of its digits is 384, while the sum is 18.

The square root of 22231422 is about 4715.0208907278. The cubic root of 22231422 is about 281.1830133801.

Adding to 22231422 its reverse (22413222), we get a palindrome (44644644).

The spelling of 22231422 in words is "twenty-two million, two hundred thirty-one thousand, four hundred twenty-two".