856126530 has 192 divisors, whose sum is σ = 2678762880. Its totient is φ = 193995648.

The previous prime is 856126501. The next prime is 856126589. The reversal of 856126530 is 35621658.

856126530 is a `hidden beast` number, since 8 + 5 + 612 + 6 + 5 + 30 = 666.

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 95 ways as a sum of consecutive naturals, for example, 2156292 + ... + 2156688.

It is an arithmetic number, because the mean of its divisors is an integer number (13951890).

Almost surely, 2^856126530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 856126530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1339381440).

856126530 is an abundant number, since it is smaller than the sum of its proper divisors (1822636350).

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

856126530 is a wasteful number, since it uses less digits than its factorization.

856126530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590 (or 577 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 856126530 is about 29259.6399499379. The cubic root of 856126530 is about 949.5386605803.

The spelling of 856126530 in words is "eight hundred fifty-six million, one hundred twenty-six thousand, five hundred thirty".