8278438016 has 128 divisors (see below), whose sum is σ = 17958283200. Its totient is φ = 3787886592.

The previous prime is 8278437983. The next prime is 8278438019. The reversal of 8278438016 is 6108348728.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (8278438019) 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, 17726615 + ... + 17727081.

Almost surely, 2^8278438016 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 8278438016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8979141600).

8278438016 is an abundant number, since it is smaller than the sum of its proper divisors (9679845184).

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

8278438016 is a wasteful number, since it uses less digits than its factorization.

8278438016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734 (or 722 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 47.

The square root of 8278438016 is about 90985.9220758904. The cubic root of 8278438016 is about 2022.9390618420.

The spelling of 8278438016 in words is "eight billion, two hundred seventy-eight million, four hundred thirty-eight thousand, sixteen".