22440345 has 32 divisors (see below), whose sum is σ = 37670400. Its totient is φ = 11391744.

The previous prime is 22440307. The next prime is 22440347. The reversal of 22440345 is 54304422.

It is not a de Polignac number, because 22440345 - 2¹⁰ = 22439321 is a prime.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (22440347) 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 31 ways as a sum of consecutive naturals, for example, 34039 + ... + 34691.

It is an arithmetic number, because the mean of its divisors is an integer number (1177200).

Almost surely, 2^22440345 is an apocalyptic number.

It is an amenable number.

22440345 is a deficient number, since it is larger than the sum of its proper divisors (15230055).

22440345 is a wasteful number, since it uses less digits than its factorization.

22440345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769.

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 22440345 is about 4737.1241275694. The cubic root of 22440345 is about 282.0610878172.

Adding to 22440345 its reverse (54304422), we get a palindrome (76744767).

The spelling of 22440345 in words is "twenty-two million, four hundred forty thousand, three hundred forty-five".