2205560020 has 24 divisors (see below), whose sum is σ = 4719068424. Its totient is φ = 865577856.

The previous prime is 2205560003. The next prime is 2205560029. The reversal of 2205560020 is 200655022.

It can be written as a sum of positive squares in 4 ways, for example, as 327031056 + 1878528964 = 18084^2 + 43342^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2205559973 and 2205560000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2205560029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1039299 + ... + 1041418.

It is an arithmetic number, because the mean of its divisors is an integer number (196627851).

Almost surely, 2^2205560020 is an apocalyptic number.

2205560020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2205560020 is an abundant number, since it is smaller than the sum of its proper divisors (2513508404).

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

2205560020 is a wasteful number, since it uses less digits than its factorization.

2205560020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2080779 (or 2080777 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 2205560020 is about 46963.3902098219. The cubic root of 2205560020 is about 1301.6861788421.

The spelling of 2205560020 in words is "two billion, two hundred five million, five hundred sixty thousand, twenty".