22065388 has 12 divisors (see below), whose sum is σ = 40885992. Its totient is φ = 10383680.

The previous prime is 22065367. The next prime is 22065389. The reversal of 22065388 is 88356022.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (22065389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162178 + ... + 162313.

It is an arithmetic number, because the mean of its divisors is an integer number (3407166).

Almost surely, 2^22065388 is an apocalyptic number.

It is an amenable number.

22065388 is a deficient number, since it is larger than the sum of its proper divisors (18820604).

22065388 is a wasteful number, since it uses less digits than its factorization.

22065388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324512 (or 324510 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 22065388 is about 4697.3809724143. The cubic root of 22065388 is about 280.4812641657.

The spelling of 22065388 in words is "twenty-two million, sixty-five thousand, three hundred eighty-eight".