7983800220 has 144 divisors (see below), whose sum is σ = 25036452000. Its totient is φ = 1898856960.

The previous prime is 7983800203. The next prime is 7983800257. The reversal of 7983800220 is 220083897.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 374406 + ... + 395154.

It is an arithmetic number, because the mean of its divisors is an integer number (173864250).

Almost surely, 2^7983800220 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 7983800220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12518226000).

7983800220 is an abundant number, since it is smaller than the sum of its proper divisors (17052651780).

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

7983800220 is a wasteful number, since it uses less digits than its factorization.

7983800220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20836 (or 20823 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 7983800220 is about 89352.1136851278. The cubic root of 7983800220 is about 1998.6491060816.

The spelling of 7983800220 in words is "seven billion, nine hundred eighty-three million, eight hundred thousand, two hundred twenty".