22140005 has 4 divisors (see below), whose sum is σ = 26568012. Its totient is φ = 17712000.

The previous prime is 22139993. The next prime is 22140029. The reversal of 22140005 is 50004122.

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 5354596 + 16785409 = 2314^2 + 4097^2 .

It is not a de Polignac number, because 22140005 - 2⁸ = 22139749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2213996 + ... + 2214005.

It is an arithmetic number, because the mean of its divisors is an integer number (6642003).

Almost surely, 2^22140005 is an apocalyptic number.

It is an amenable number.

22140005 is a deficient number, since it is larger than the sum of its proper divisors (4428007).

22140005 is an equidigital number, since it uses as much as digits as its factorization.

22140005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4428006.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 22140005 is about 4705.3166737213. The cubic root of 22140005 is about 280.7970698322.

Adding to 22140005 its reverse (50004122), we get a palindrome (72144127).

The spelling of 22140005 in words is "twenty-two million, one hundred forty thousand, five".