3978050688 has 96 divisors (see below), whose sum is σ = 11592422400. Its totient is φ = 1309201920.

The previous prime is 3978050683. The next prime is 3978050717. The reversal of 3978050688 is 8860508793.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (3978050683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69153 + ... + 112863.

It is an arithmetic number, because the mean of its divisors is an integer number (120754400).

Almost surely, 2^3978050688 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 3978050688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5796211200).

3978050688 is an abundant number, since it is smaller than the sum of its proper divisors (7614371712).

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

3978050688 is a wasteful number, since it uses less digits than its factorization.

3978050688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43810 (or 43795 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The square root of 3978050688 is about 63071.7899539881. The cubic root of 3978050688 is about 1584.4921947646.

The spelling of 3978050688 in words is "three billion, nine hundred seventy-eight million, fifty thousand, six hundred eighty-eight".