22431422 has 16 divisors (see below), whose sum is σ = 36433152. Its totient is φ = 10296480.

The previous prime is 22431391. The next prime is 22431427. The reversal of 22431422 is 22413422.

It is a junction number, because it is equal to n+sod(n) for n = 22431394 and 22431403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22431427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2708 + ... + 7224.

It is an arithmetic number, because the mean of its divisors is an integer number (2277072).

Almost surely, 2^22431422 is an apocalyptic number.

22431422 is a deficient number, since it is larger than the sum of its proper divisors (14001730).

22431422 is a wasteful number, since it uses less digits than its factorization.

22431422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4723.

The product of its digits is 768, while the sum is 20.

The square root of 22431422 is about 4736.1822177784. The cubic root of 22431422 is about 282.0236973530.

Adding to 22431422 its reverse (22413422), we get a palindrome (44844844).

The spelling of 22431422 in words is "twenty-two million, four hundred thirty-one thousand, four hundred twenty-two".