22426643 has 4 divisors (see below), whose sum is σ = 22436520. Its totient is φ = 22416768.

The previous prime is 22426637. The next prime is 22426673. The reversal of 22426643 is 34662422.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22426643 - 2¹⁰ = 22425619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22426603) 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 3 ways as a sum of consecutive naturals, for example, 371 + ... + 6707.

It is an arithmetic number, because the mean of its divisors is an integer number (5609130).

Almost surely, 2^22426643 is an apocalyptic number.

22426643 is a deficient number, since it is larger than the sum of its proper divisors (9877).

22426643 is an equidigital number, since it uses as much as digits as its factorization.

22426643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9876.

The product of its digits is 13824, while the sum is 29.

The square root of 22426643 is about 4735.6776706191. The cubic root of 22426643 is about 282.0036676082.

The spelling of 22426643 in words is "twenty-two million, four hundred twenty-six thousand, six hundred forty-three".