8646287328 has 240 divisors, whose sum is σ = 30326123520. Its totient is φ = 2362846464.

The previous prime is 8646287297. The next prime is 8646287339. The reversal of 8646287328 is 8237826468.

8646287328 is a `hidden beast` number, since 8 + 6 + 4 + 628 + 7 + 3 + 2 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 406953 + ... + 427671.

It is an arithmetic number, because the mean of its divisors is an integer number (126358848).

Almost surely, 2^8646287328 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 8646287328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15163061760).

8646287328 is an abundant number, since it is smaller than the sum of its proper divisors (21679836192).

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

8646287328 is a wasteful number, since it uses less digits than its factorization.

8646287328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20771 (or 20754 counting only the distinct ones).

The product of its digits is 6193152, while the sum is 54.

The square root of 8646287328 is about 92985.4145982046. The cubic root of 8646287328 is about 2052.4687551243.

The spelling of 8646287328 in words is "eight billion, six hundred forty-six million, two hundred eighty-seven thousand, three hundred twenty-eight".