2217988008 has 80 divisors (see below), whose sum is σ = 6220368000. Its totient is φ = 738383904.

The previous prime is 2217988007. The next prime is 2217988021. The reversal of 2217988008 is 8008897122.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2217988007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 658633 + ... + 661991.

It is an arithmetic number, because the mean of its divisors is an integer number (77754600).

Almost surely, 2^2217988008 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 2217988008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3110184000).

2217988008 is an abundant number, since it is smaller than the sum of its proper divisors (4002379992).

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

2217988008 is a wasteful number, since it uses less digits than its factorization.

2217988008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4396 (or 4383 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 2217988008 is about 47095.5200417195. The cubic root of 2217988008 is about 1304.1265340096.

The spelling of 2217988008 in words is "two billion, two hundred seventeen million, nine hundred eighty-eight thousand, eight".