20560224 has 48 divisors (see below), whose sum is σ = 54673920. Its totient is φ = 6764160.

The previous prime is 20560213. The next prime is 20560247. The reversal of 20560224 is 42206502.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 20560224.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6229 + ... + 8939.

It is an arithmetic number, because the mean of its divisors is an integer number (1139040).

Almost surely, 2^20560224 is an apocalyptic number.

20560224 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 20560224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27336960).

20560224 is an abundant number, since it is smaller than the sum of its proper divisors (34113696).

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

20560224 is a wasteful number, since it uses less digits than its factorization.

20560224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2803 (or 2795 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 20560224 is about 4534.3383199757. The cubic root of 20560224 is about 273.9529284937.

Adding to 20560224 its reverse (42206502), we get a palindrome (62766726).

The spelling of 20560224 in words is "twenty million, five hundred sixty thousand, two hundred twenty-four".