22040805 has 16 divisors (see below), whose sum is σ = 35372160. Its totient is φ = 11719488.

The previous prime is 22040803. The next prime is 22040833. The reversal of 22040805 is 50804022.

It is not a de Polignac number, because 22040805 - 2¹ = 22040803 is a prime.

It is a super-3 number, since 3×22040805³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22040801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3339 + ... + 7431.

It is an arithmetic number, because the mean of its divisors is an integer number (2210760).

Almost surely, 2^22040805 is an apocalyptic number.

It is an amenable number.

22040805 is a deficient number, since it is larger than the sum of its proper divisors (13331355).

22040805 is a wasteful number, since it uses less digits than its factorization.

22040805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4460.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 22040805 is about 4694.7635723218. The cubic root of 22040805 is about 280.3770642743.

Adding to 22040805 its reverse (50804022), we get a palindrome (72844827).

The spelling of 22040805 in words is "twenty-two million, forty thousand, eight hundred five".