22140605 has 16 divisors (see below), whose sum is σ = 29185920. Its totient is φ = 16049088.

The previous prime is 22140581. The next prime is 22140617. The reversal of 22140605 is 50604122.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22140605 - 2¹⁰ = 22139581 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2882 + ... + 7251.

It is an arithmetic number, because the mean of its divisors is an integer number (1824120).

Almost surely, 2^22140605 is an apocalyptic number.

It is an amenable number.

22140605 is a deficient number, since it is larger than the sum of its proper divisors (7045315).

22140605 is a wasteful number, since it uses less digits than its factorization.

22140605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10180.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 22140605 is about 4705.3804309535. The cubic root of 22140605 is about 280.7996063676.

Adding to 22140605 its reverse (50604122), we get a palindrome (72744727).

The spelling of 22140605 in words is "twenty-two million, one hundred forty thousand, six hundred five".