8238591840 has 96 divisors (see below), whose sum is σ = 25964227296. Its totient is φ = 2195886080.

The previous prime is 8238591827. The next prime is 8238591857. The reversal of 8238591840 is 481958328.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×8238591840² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 8238591840.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 1716484 + ... + 1721276.

It is an arithmetic number, because the mean of its divisors is an integer number (270460701).

Almost surely, 2^8238591840 is an apocalyptic number.

8238591840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8238591840 is an abundant number, since it is smaller than the sum of its proper divisors (17725635456).

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

8238591840 is a wasteful number, since it uses less digits than its factorization.

8238591840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8392 (or 8384 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 48.

The square root of 8238591840 is about 90766.6890439439. The cubic root of 8238591840 is about 2019.6882046613.

The spelling of 8238591840 in words is "eight billion, two hundred thirty-eight million, five hundred ninety-one thousand, eight hundred forty".