8312758920 has 256 divisors, whose sum is σ = 28598860800. Its totient is φ = 2146176000.

The previous prime is 8312758901. The next prime is 8312758933. The reversal of 8312758920 is 298572138.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11068545 + ... + 11069295.

It is an arithmetic number, because the mean of its divisors is an integer number (111714300).

Almost surely, 2^8312758920 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 8312758920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14299430400).

8312758920 is an abundant number, since it is smaller than the sum of its proper divisors (20286101880).

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

8312758920 is a wasteful number, since it uses less digits than its factorization.

8312758920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085 (or 1075 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 8312758920 is about 91174.3325722761. The cubic root of 8312758920 is about 2025.7307869945.

The spelling of 8312758920 in words is "eight billion, three hundred twelve million, seven hundred fifty-eight thousand, nine hundred twenty".