8402866688 has 80 divisors (see below), whose sum is σ = 17253255096. Its totient is φ = 4086005760.

The previous prime is 8402866687. The next prime is 8402866733. The reversal of 8402866688 is 8866682048.

It can be written as a sum of positive squares in 4 ways, for example, as 1219965184 + 7182901504 = 34928^2 + 84752^2 .

It is not an unprimeable number, because it can be changed into a prime (8402866687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12867770 + ... + 12868422.

Almost surely, 2^8402866688 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 8402866688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8626627548).

8402866688 is an abundant number, since it is smaller than the sum of its proper divisors (8850388408).

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

8402866688 is an equidigital number, since it uses as much as digits as its factorization.

8402866688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1325 (or 1309 counting only the distinct ones).

The product of its (nonzero) digits is 7077888, while the sum is 56.

The square root of 8402866688 is about 91667.1516302323. The cubic root of 8402866688 is about 2033.0239326653.

The spelling of 8402866688 in words is "eight billion, four hundred two million, eight hundred sixty-six thousand, six hundred eighty-eight".