22426649 has 4 divisors (see below), whose sum is σ = 25630464. Its totient is φ = 19222836.

The previous prime is 22426637. The next prime is 22426673. The reversal of 22426649 is 94662422.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94662422 = 2 ⋅47331211.

It is a cyclic number.

It is not a de Polignac number, because 22426649 - 2¹² = 22422553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22426619) 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, 1601897 + ... + 1601910.

It is an arithmetic number, because the mean of its divisors is an integer number (6407616).

Almost surely, 2^22426649 is an apocalyptic number.

It is an amenable number.

22426649 is a deficient number, since it is larger than the sum of its proper divisors (3203815).

22426649 is an equidigital number, since it uses as much as digits as its factorization.

22426649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3203814.

The product of its digits is 41472, while the sum is 35.

The square root of 22426649 is about 4735.6783041081. The cubic root of 22426649 is about 282.0036927572.

The spelling of 22426649 in words is "twenty-two million, four hundred twenty-six thousand, six hundred forty-nine".