22065918 has 16 divisors (see below), whose sum is σ = 50436480. Its totient is φ = 6304536.

The previous prime is 22065863. The next prime is 22065919. The reversal of 22065918 is 81956022.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22065919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262648 + ... + 262731.

It is an arithmetic number, because the mean of its divisors is an integer number (3152280).

Almost surely, 2^22065918 is an apocalyptic number.

22065918 is an abundant number, since it is smaller than the sum of its proper divisors (28370562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22065918 is a wasteful number, since it uses less digits than its factorization.

22065918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525391.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 22065918 is about 4697.4373864906. The cubic root of 22065918 is about 280.4835098227.

The spelling of 22065918 in words is "twenty-two million, sixty-five thousand, nine hundred eighteen".