2205281808 has 80 divisors (see below), whose sum is σ = 6395354560. Its totient is φ = 727501824.

The previous prime is 2205281731. The next prime is 2205281833. The reversal of 2205281808 is 8081825022.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 15591 + ... + 68217.

It is an arithmetic number, because the mean of its divisors is an integer number (79941932).

Almost surely, 2^2205281808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2205281808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3197677280).

2205281808 is an abundant number, since it is smaller than the sum of its proper divisors (4190072752).

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

2205281808 is a wasteful number, since it uses less digits than its factorization.

2205281808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52741 (or 52729 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 2205281808 is about 46960.4281070776. The cubic root of 2205281808 is about 1301.6314444526.

The spelling of 2205281808 in words is "two billion, two hundred five million, two hundred eighty-one thousand, eight hundred eight".