8686281440 has 48 divisors (see below), whose sum is σ = 20611039680. Its totient is φ = 3459325440.

The previous prime is 8686281371. The next prime is 8686281451. The reversal of 8686281440 is 441826868.

It is a happy number.

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, 81896 + ... + 155175.

It is an arithmetic number, because the mean of its divisors is an integer number (429396660).

Almost surely, 2^8686281440 is an apocalyptic number.

8686281440 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8686281440 is an abundant number, since it is smaller than the sum of its proper divisors (11924758240).

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

8686281440 is a wasteful number, since it uses less digits than its factorization.

8686281440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237315 (or 237307 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 47.

The square root of 8686281440 is about 93200.2223173314. Note that the first 3 decimals coincide. The cubic root of 8686281440 is about 2055.6285091398.

The spelling of 8686281440 in words is "eight billion, six hundred eighty-six million, two hundred eighty-one thousand, four hundred forty".