220005560 has 64 divisors (see below), whose sum is σ = 525117600. Its totient is φ = 82722816.

The previous prime is 220005553. The next prime is 220005601. The reversal of 220005560 is 65500022.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103064 + ... + 105176.

Almost surely, 2^220005560 is an apocalyptic number.

220005560 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 220005560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262558800).

220005560 is an abundant number, since it is smaller than the sum of its proper divisors (305112040).

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

220005560 is a wasteful number, since it uses less digits than its factorization.

220005560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2280 (or 2276 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 220005560 is about 14832.5844005689. The cubic root of 220005560 is about 603.6861591926.

Adding to 220005560 its reverse (65500022), we get a palindrome (285505582).

The spelling of 220005560 in words is "two hundred twenty million, five thousand, five hundred sixty".