8281068520 has 32 divisors (see below), whose sum is σ = 18670396320. Its totient is φ = 3305673280.

The previous prime is 8281068517. The next prime is 8281068553. The reversal of 8281068520 is 258601828.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191182 + ... + 230461.

It is an arithmetic number, because the mean of its divisors is an integer number (583449885).

Almost surely, 2^8281068520 is an apocalyptic number.

It is an amenable number.

8281068520 is an abundant number, since it is smaller than the sum of its proper divisors (10389327800).

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

8281068520 is a wasteful number, since it uses less digits than its factorization.

8281068520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422145 (or 422141 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 40.

The square root of 8281068520 is about 91000.3764827377. The cubic root of 8281068520 is about 2023.1533045835.

The spelling of 8281068520 in words is "eight billion, two hundred eighty-one million, sixty-eight thousand, five hundred twenty".