8478616240 has 80 divisors (see below), whose sum is σ = 21102220800. Its totient is φ = 3158459136.

The previous prime is 8478616231. The next prime is 8478616241. The reversal of 8478616240 is 426168748.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (8478616241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42409 + ... + 136951.

It is an arithmetic number, because the mean of its divisors is an integer number (263777760).

Almost surely, 2^8478616240 is an apocalyptic number.

8478616240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8478616240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10551110400).

8478616240 is an abundant number, since it is smaller than the sum of its proper divisors (12623604560).

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

8478616240 is a wasteful number, since it uses less digits than its factorization.

8478616240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94634 (or 94628 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 46.

The square root of 8478616240 is about 92079.4018225575. The cubic root of 8478616240 is about 2039.1147190434.

The spelling of 8478616240 in words is "eight billion, four hundred seventy-eight million, six hundred sixteen thousand, two hundred forty".