8520463872 has 200 divisors, whose sum is σ = 26056816632. Its totient is φ = 2770329600.

The previous prime is 8520463849. The next prime is 8520463951. The reversal of 8520463872 is 2783640258.

8520463872 is a `hidden beast` number, since 8 + 5 + 2 + 0 + 4 + 638 + 7 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1697847 + ... + 1702857.

Almost surely, 2^8520463872 is an apocalyptic number.

8520463872 is a gapful number since it is divisible by the number (82) 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 8520463872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13028408316).

8520463872 is an abundant number, since it is smaller than the sum of its proper divisors (17536352760).

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

8520463872 is an equidigital number, since it uses as much as digits as its factorization.

8520463872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5082 (or 5057 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The square root of 8520463872 is about 92306.3587842138. The cubic root of 8520463872 is about 2042.4640122660.

The spelling of 8520463872 in words is "eight billion, five hundred twenty million, four hundred sixty-three thousand, eight hundred seventy-two".