22018560 has 160 divisors (see below), whose sum is σ = 73066752. Its totient is φ = 5652480.

The previous prime is 22018543. The next prime is 22018561. The reversal of 22018560 is 6581022.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 22018560.

It is not an unprimeable number, because it can be changed into a prime (22018561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 360930 + ... + 360990.

Almost surely, 2^22018560 is an apocalyptic number.

22018560 is a gapful number since it is divisible by the number (20) 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 22018560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36533376).

22018560 is an abundant number, since it is smaller than the sum of its proper divisors (51048192).

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

22018560 is an equidigital number, since it uses as much as digits as its factorization.

22018560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 22018560 is about 4692.3938453629. The cubic root of 22018560 is about 280.2827076597.

Adding to 22018560 its reverse (6581022), we get a palindrome (28599582).

It can be divided in two parts, 22018 and 560, that added together give a triangular number (22578 = T₂₁₂).

The spelling of 22018560 in words is "twenty-two million, eighteen thousand, five hundred sixty".