22544013 has 8 divisors (see below), whose sum is σ = 31640800. Its totient is φ = 14238288.

The previous prime is 22544003. The next prime is 22544017. The reversal of 22544013 is 31044522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22544013 - 2⁶ = 22543949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22544017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197698 + ... + 197811.

It is an arithmetic number, because the mean of its divisors is an integer number (3955100).

Almost surely, 2^22544013 is an apocalyptic number.

It is an amenable number.

22544013 is a deficient number, since it is larger than the sum of its proper divisors (9096787).

22544013 is a wasteful number, since it uses less digits than its factorization.

22544013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395531.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 22544013 is about 4748.0536012139. The cubic root of 22544013 is about 282.4947679612.

Adding to 22544013 its reverse (31044522), we get a palindrome (53588535).

The spelling of 22544013 in words is "twenty-two million, five hundred forty-four thousand, thirteen".