8520232320 has 256 divisors, whose sum is σ = 31765248000. Its totient is φ = 2152396800.

The previous prime is 8520232319. The next prime is 8520232351. The reversal of 8520232320 is 232320258.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 315345 + ... + 341295.

It is an arithmetic number, because the mean of its divisors is an integer number (124083000).

Almost surely, 2^8520232320 is an apocalyptic number.

8520232320 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 8520232320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15882624000).

8520232320 is an abundant number, since it is smaller than the sum of its proper divisors (23245015680).

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

8520232320 is a wasteful number, since it uses less digits than its factorization.

8520232320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25998 (or 25980 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 8520232320 is about 92305.1045175726. The cubic root of 8520232320 is about 2042.4455101078.

Adding to 8520232320 its reverse (232320258), we get a palindrome (8752552578).

The spelling of 8520232320 in words is "eight billion, five hundred twenty million, two hundred thirty-two thousand, three hundred twenty".