8457199256 has 64 divisors (see below), whose sum is σ = 17498052000. Its totient is φ = 3800079360.

The previous prime is 8457199189. The next prime is 8457199259. The reversal of 8457199256 is 6529917548.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8457199259) 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 15 ways as a sum of consecutive naturals, for example, 5917550 + ... + 5918978.

Almost surely, 2^8457199256 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 8457199256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8749026000).

8457199256 is an abundant number, since it is smaller than the sum of its proper divisors (9040852744).

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

8457199256 is a wasteful number, since it uses less digits than its factorization.

8457199256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2172 (or 2168 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 56.

The square root of 8457199256 is about 91963.0320074322. The cubic root of 8457199256 is about 2037.3963368088.

The spelling of 8457199256 in words is "eight billion, four hundred fifty-seven million, one hundred ninety-nine thousand, two hundred fifty-six".