3987872680 has 64 divisors (see below), whose sum is σ = 9819636480. Its totient is φ = 1445510400.

The previous prime is 3987872671. The next prime is 3987872683. The reversal of 3987872680 is 862787893.

It is a super-3 number, since 3×3987872680³ (a number of 30 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (3987872683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125185 + ... + 153775.

It is an arithmetic number, because the mean of its divisors is an integer number (153431820).

Almost surely, 2^3987872680 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 3987872680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4909818240).

3987872680 is an abundant number, since it is smaller than the sum of its proper divisors (5831763800).

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

3987872680 is a wasteful number, since it uses less digits than its factorization.

3987872680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28930 (or 28926 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 58.

The square root of 3987872680 is about 63149.6055411275. The cubic root of 3987872680 is about 1585.7951845904.

The spelling of 3987872680 in words is "three billion, nine hundred eighty-seven million, eight hundred seventy-two thousand, six hundred eighty".