22040705 has 4 divisors (see below), whose sum is σ = 26448852. Its totient is φ = 17632560.

The previous prime is 22040699. The next prime is 22040713. The reversal of 22040705 is 50704022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13490929 + 8549776 = 3673^2 + 2924^2 .

It is not a de Polignac number, because 22040705 - 2²⁰ = 20992129 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2204066 + ... + 2204075.

It is an arithmetic number, because the mean of its divisors is an integer number (6612213).

Almost surely, 2^22040705 is an apocalyptic number.

It is an amenable number.

22040705 is a deficient number, since it is larger than the sum of its proper divisors (4408147).

22040705 is an equidigital number, since it uses as much as digits as its factorization.

22040705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4408146.

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 22040705 is about 4694.7529221462. The cubic root of 22040705 is about 280.3766402464.

Adding to 22040705 its reverse (50704022), we get a palindrome (72744727).

The spelling of 22040705 in words is "twenty-two million, forty thousand, seven hundred five".