791513856 has 540 divisors, whose sum is σ = 2960468280. Its totient is φ = 209018880.

The previous prime is 791513839. The next prime is 791513861. The reversal of 791513856 is 658315197.

It is a happy number.

Its product of digits (226800) is a multiple of the sum of its prime divisors (72).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 19305196 + ... + 19305236.

Almost surely, 2^791513856 is an apocalyptic number.

791513856 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 791513856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1480234140).

791513856 is an abundant number, since it is smaller than the sum of its proper divisors (2168954424).

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

791513856 is a wasteful number, since it uses less digits than its factorization.

791513856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102 (or 72 counting only the distinct ones).

The product of its digits is 226800, while the sum is 45.

The square root of 791513856 is about 28133.8560456970. The cubic root of 791513856 is about 925.0236589030.

The spelling of 791513856 in words is "seven hundred ninety-one million, five hundred thirteen thousand, eight hundred fifty-six".