7996457256 has 64 divisors (see below), whose sum is σ = 20398158720. Its totient is φ = 2611365120.

The previous prime is 7996457251. The next prime is 7996457267. The reversal of 7996457256 is 6527546997.

It is a self number, because there is not a number n which added to its sum of digits gives 7996457256.

It is not an unprimeable number, because it can be changed into a prime (7996457251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 940866 + ... + 949326.

It is an arithmetic number, because the mean of its divisors is an integer number (318721230).

Almost surely, 2^7996457256 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 7996457256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10199079360).

7996457256 is an abundant number, since it is smaller than the sum of its proper divisors (12401701464).

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

7996457256 is a wasteful number, since it uses less digits than its factorization.

7996457256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9266 (or 9262 counting only the distinct ones).

The product of its digits is 28576800, while the sum is 60.

The square root of 7996457256 is about 89422.9123659032. The cubic root of 7996457256 is about 1999.7047277426.

The spelling of 7996457256 in words is "seven billion, nine hundred ninety-six million, four hundred fifty-seven thousand, two hundred fifty-six".