8505869280 has 192 divisors, whose sum is σ = 28114200576. Its totient is φ = 2158848000.

The previous prime is 8505869257. The next prime is 8505869377. The reversal of 8505869280 is 829685058.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 902995 + ... + 912365.

It is an arithmetic number, because the mean of its divisors is an integer number (146428128).

Almost surely, 2^8505869280 is an apocalyptic number.

8505869280 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 8505869280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14057100288).

8505869280 is an abundant number, since it is smaller than the sum of its proper divisors (19608331296).

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

8505869280 is a wasteful number, since it uses less digits than its factorization.

8505869280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9481 (or 9473 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 51.

The square root of 8505869280 is about 92227.2697199695. The cubic root of 8505869280 is about 2041.2971757583.

The spelling of 8505869280 in words is "eight billion, five hundred five million, eight hundred sixty-nine thousand, two hundred eighty".