22431426 has 16 divisors (see below), whose sum is σ = 44917824. Its totient is φ = 7467984.

The previous prime is 22431391. The next prime is 22431427. The reversal of 22431426 is 62413422.

It is a junction number, because it is equal to n+sod(n) for n = 22431396 and 22431405.

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4620 + ... + 8136.

It is an arithmetic number, because the mean of its divisors is an integer number (2807364).

Almost surely, 2^22431426 is an apocalyptic number.

22431426 is an abundant number, since it is smaller than the sum of its proper divisors (22486398).

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

22431426 is a wasteful number, since it uses less digits than its factorization.

22431426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4585.

The product of its digits is 2304, while the sum is 24.

The square root of 22431426 is about 4736.1826400594. The cubic root of 22431426 is about 282.0237141166.

Adding to 22431426 its reverse (62413422), we get a palindrome (84844848).

The spelling of 22431426 in words is "twenty-two million, four hundred thirty-one thousand, four hundred twenty-six".