8305251240 has 384 divisors, whose sum is σ = 30791819520. Its totient is φ = 1776783360.

The previous prime is 8305251239. The next prime is 8305251257. The reversal of 8305251240 is 421525038.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 8305251198 and 8305251207.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4340524 + ... + 4342436.

It is an arithmetic number, because the mean of its divisors is an integer number (80187030).

Almost surely, 2^8305251240 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 8305251240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15395909760).

8305251240 is an abundant number, since it is smaller than the sum of its proper divisors (22486568280).

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

8305251240 is a wasteful number, since it uses less digits than its factorization.

8305251240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1985 (or 1970 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 8305251240 is about 91133.1511580720. The cubic root of 8305251240 is about 2025.1207560971.

Adding to 8305251240 its reverse (421525038), we get a palindrome (8726776278).

The spelling of 8305251240 in words is "eight billion, three hundred five million, two hundred fifty-one thousand, two hundred forty".