22440003 has 8 divisors (see below), whose sum is σ = 30093648. Its totient is φ = 14873184.

The previous prime is 22439999. The next prime is 22440031. The reversal of 22440003 is 30004422.

It is a happy number.

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

It is not a de Polignac number, because 22440003 - 2² = 22439999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22440043) 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, 21100 + ... + 22137.

It is an arithmetic number, because the mean of its divisors is an integer number (3761706).

Almost surely, 2^22440003 is an apocalyptic number.

22440003 is a deficient number, since it is larger than the sum of its proper divisors (7653645).

22440003 is a wasteful number, since it uses less digits than its factorization.

22440003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43413.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 22440003 is about 4737.0880295810. The cubic root of 22440003 is about 282.0596549013.

Adding to 22440003 its reverse (30004422), we get a palindrome (52444425).

The spelling of 22440003 in words is "twenty-two million, four hundred forty thousand, three".