22018044 has 24 divisors (see below), whose sum is σ = 51459408. Its totient is φ = 7327360.

The previous prime is 22018039. The next prime is 22018049. The reversal of 22018044 is 44081022.

It is an interprime number because it is at equal distance from previous prime (22018039) and next prime (22018049).

It is a self number, because there is not a number n which added to its sum of digits gives 22018044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22018049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9214 + ... + 11354.

It is an arithmetic number, because the mean of its divisors is an integer number (2144142).

Almost surely, 2^22018044 is an apocalyptic number.

It is an amenable number.

22018044 is an abundant number, since it is smaller than the sum of its proper divisors (29441364).

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

22018044 is a wasteful number, since it uses less digits than its factorization.

22018044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3005 (or 3003 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 22018044 is about 4692.3388624438. The cubic root of 22018044 is about 280.2805181885.

Adding to 22018044 its reverse (44081022), we get a palindrome (66099066).

The spelling of 22018044 in words is "twenty-two million, eighteen thousand, forty-four".