2205317780 has 24 divisors (see below), whose sum is σ = 4738870752. Its totient is φ = 861612192.

The previous prime is 2205317767. The next prime is 2205317819. The reversal of 2205317780 is 877135022.

It is a self number, because there is not a number n which added to its sum of digits gives 2205317780.

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, 1281302 + ... + 1283021.

It is an arithmetic number, because the mean of its divisors is an integer number (197452948).

Almost surely, 2^2205317780 is an apocalyptic number.

2205317780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2205317780 is an abundant number, since it is smaller than the sum of its proper divisors (2533552972).

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

2205317780 is a wasteful number, since it uses less digits than its factorization.

2205317780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2564375 (or 2564373 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 2205317780 is about 46960.8111088384. The cubic root of 2205317780 is about 1301.6385217086.

The spelling of 2205317780 in words is "two billion, two hundred five million, three hundred seventeen thousand, seven hundred eighty".