22438641 has 4 divisors (see below), whose sum is σ = 29918192. Its totient is φ = 14959092.

The previous prime is 22438609. The next prime is 22438673. The reversal of 22438641 is 14683422.

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.

It is an interprime number because it is at equal distance from previous prime (22438609) and next prime (22438673).

It is not a de Polignac number, because 22438641 - 2⁵ = 22438609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22438599 and 22438608.

It is not an unprimeable number, because it can be changed into a prime (22438681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3739771 + ... + 3739776.

It is an arithmetic number, because the mean of its divisors is an integer number (7479548).

Almost surely, 2^22438641 is an apocalyptic number.

It is an amenable number.

22438641 is a deficient number, since it is larger than the sum of its proper divisors (7479551).

22438641 is an equidigital number, since it uses as much as digits as its factorization.

22438641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7479550.

The product of its digits is 9216, while the sum is 30.

The square root of 22438641 is about 4736.9442681965. The cubic root of 22438641 is about 282.0539482321.

The spelling of 22438641 in words is "twenty-two million, four hundred thirty-eight thousand, six hundred forty-one".