22040005 has 16 divisors (see below), whose sum is σ = 28635264. Its totient is φ = 16188480.

The previous prime is 22039999. The next prime is 22040009. The reversal of 22040005 is 50004022.

It is a happy number.

It is not a de Polignac number, because 22040005 - 2⁷ = 22039877 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22040009) 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 15 ways as a sum of consecutive naturals, for example, 12912 + ... + 14518.

It is an arithmetic number, because the mean of its divisors is an integer number (1789704).

Almost surely, 2^22040005 is an apocalyptic number.

It is an amenable number.

22040005 is a deficient number, since it is larger than the sum of its proper divisors (6595259).

22040005 is a wasteful number, since it uses less digits than its factorization.

22040005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1836.

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 22040005 is about 4694.6783702401. The cubic root of 22040005 is about 280.3736720152.

Adding to 22040005 its reverse (50004022), we get a palindrome (72044027).

The spelling of 22040005 in words is "twenty-two million, forty thousand, five".