2205475780 has 36 divisors (see below), whose sum is σ = 4785763500. Its totient is φ = 853725120.

The previous prime is 2205475771. The next prime is 2205475793. The reversal of 2205475780 is 875745022.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 665227264 + 1540248516 = 25792^2 + 39246^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38155 + ... + 76594.

It is an arithmetic number, because the mean of its divisors is an integer number (132937875).

Almost surely, 2^2205475780 is an apocalyptic number.

2205475780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2205475780 is an abundant number, since it is smaller than the sum of its proper divisors (2580287720).

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

2205475780 is a wasteful number, since it uses less digits than its factorization.

2205475780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114820 (or 114787 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 40.

The square root of 2205475780 is about 46962.4933324456. The cubic root of 2205475780 is about 1301.6696062651.

The spelling of 2205475780 in words is "two billion, two hundred five million, four hundred seventy-five thousand, seven hundred eighty".