22043918 has 16 divisors (see below), whose sum is σ = 35758800. Its totient is φ = 10131456.

The previous prime is 22043911. The next prime is 22043941. The reversal of 22043918 is 81934022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22043911) 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 7 ways as a sum of consecutive naturals, for example, 5033 + ... + 8331.

It is an arithmetic number, because the mean of its divisors is an integer number (2234925).

Almost surely, 2^22043918 is an apocalyptic number.

22043918 is a deficient number, since it is larger than the sum of its proper divisors (13714882).

22043918 is a wasteful number, since it uses less digits than its factorization.

22043918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3571.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 22043918 is about 4695.0951002083. The cubic root of 22043918 is about 280.3902636215.

The spelling of 22043918 in words is "twenty-two million, forty-three thousand, nine hundred eighteen".