8345313920 has 32 divisors (see below), whose sum is σ = 19950517620. Its totient is φ = 3338125312.

The previous prime is 8345313919. The next prime is 8345313929. The reversal of 8345313920 is 293135438.

It can be written as a sum of positive squares in 2 ways, for example, as 8315980864 + 29333056 = 91192^2 + 5416^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (8345313929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6519137 + ... + 6520416.

Almost surely, 2^8345313920 is an apocalyptic number.

8345313920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8345313920 is an abundant number, since it is smaller than the sum of its proper divisors (11605203700).

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

8345313920 is a wasteful number, since it uses less digits than its factorization.

8345313920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13039572 (or 13039560 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 8345313920 is about 91352.6897250431. The cubic root of 8345313920 is about 2028.3717779348.

The spelling of 8345313920 in words is "eight billion, three hundred forty-five million, three hundred thirteen thousand, nine hundred twenty".