22340505 has 32 divisors (see below), whose sum is σ = 39564288. Its totient is φ = 10673600.

The previous prime is 22340503. The next prime is 22340543. The reversal of 22340505 is 50504322.

It is not a de Polignac number, because 22340505 - 2¹ = 22340503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22340503) 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, 10762 + ... + 12668.

It is an arithmetic number, because the mean of its divisors is an integer number (1236384).

Almost surely, 2^22340505 is an apocalyptic number.

It is an amenable number.

22340505 is a deficient number, since it is larger than the sum of its proper divisors (17223783).

22340505 is a wasteful number, since it uses less digits than its factorization.

22340505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 22340505 is about 4726.5743408943. The cubic root of 22340505 is about 281.6421571444.

Adding to 22340505 its reverse (50504322), we get a palindrome (72844827).

The spelling of 22340505 in words is "twenty-two million, three hundred forty thousand, five hundred five".