3928487680 has 72 divisors (see below), whose sum is σ = 10133841312. Its totient is φ = 1450512384.

The previous prime is 3928487669. The next prime is 3928487701. The reversal of 3928487680 is 867848293.

3928487680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101404 + ... + 134683.

It is an arithmetic number, because the mean of its divisors is an integer number (140747796).

Almost surely, 2^3928487680 is an apocalyptic number.

It is an amenable number.

3928487680 is an abundant number, since it is smaller than the sum of its proper divisors (6205353632).

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

3928487680 is a wasteful number, since it uses less digits than its factorization.

3928487680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236121 (or 236107 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 55.

The square root of 3928487680 is about 62677.6489667569. The cubic root of 3928487680 is about 1577.8842160262.

The spelling of 3928487680 in words is "three billion, nine hundred twenty-eight million, four hundred eighty-seven thousand, six hundred eighty".