8251004240 has 40 divisors (see below), whose sum is σ = 19206077280. Its totient is φ = 3296532096.

The previous prime is 8251004233. The next prime is 8251004249. The reversal of 8251004240 is 424001528.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8251004249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8687 + ... + 128753.

It is an arithmetic number, because the mean of its divisors is an integer number (480151932).

Almost surely, 2^8251004240 is an apocalyptic number.

8251004240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8251004240 is an abundant number, since it is smaller than the sum of its proper divisors (10955073040).

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

8251004240 is a wasteful number, since it uses less digits than its factorization.

8251004240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120939 (or 120933 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 8251004240 is about 90835.0386139622. The cubic root of 8251004240 is about 2020.7019943559.

Adding to 8251004240 its reverse (424001528), we get a palindrome (8675005768).

The spelling of 8251004240 in words is "eight billion, two hundred fifty-one million, four thousand, two hundred forty".