22018104 has 48 divisors (see below), whose sum is σ = 60231600. Its totient is φ = 7265664.

The previous prime is 22018103. The next prime is 22018123. The reversal of 22018104 is 40181022.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22018103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5932 + ... + 8900.

It is an arithmetic number, because the mean of its divisors is an integer number (1254825).

Almost surely, 2^22018104 is an apocalyptic number.

22018104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22018104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30115800).

22018104 is an abundant number, since it is smaller than the sum of its proper divisors (38213496).

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

22018104 is a wasteful number, since it uses less digits than its factorization.

22018104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3084 (or 3077 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 22018104 is about 4692.3452558396. The cubic root of 22018104 is about 280.2807727800.

Adding to 22018104 its reverse (40181022), we get a palindrome (62199126).

It can be divided in two parts, 22018 and 104, that added together give a palindrome (22122).

The spelling of 22018104 in words is "twenty-two million, eighteen thousand, one hundred four".