7688735220 has 96 divisors (see below), whose sum is σ = 21856947840. Its totient is φ = 2019133440.

The previous prime is 7688735203. The next prime is 7688735221. The reversal of 7688735220 is 225378867.

It is a self number, because there is not a number n which added to its sum of digits gives 7688735220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7688735221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4777776 + ... + 4779384.

It is an arithmetic number, because the mean of its divisors is an integer number (227676540).

Almost surely, 2^7688735220 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 7688735220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10928473920).

7688735220 is an abundant number, since it is smaller than the sum of its proper divisors (14168212620).

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

7688735220 is a wasteful number, since it uses less digits than its factorization.

7688735220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2785 (or 2783 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 48.

The square root of 7688735220 is about 87685.4333398655. The cubic root of 7688735220 is about 1973.7173935814.

The spelling of 7688735220 in words is "seven billion, six hundred eighty-eight million, seven hundred thirty-five thousand, two hundred twenty".