845816256 has 140 divisors (see below), whose sum is σ = 2524859568. Its totient is φ = 279963648.

The previous prime is 845816221. The next prime is 845816273. The reversal of 845816256 is 652618548.

845816256 is a `hidden beast` number, since 8 + 4 + 581 + 62 + 5 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 865240 + ... + 866216.

Almost surely, 2^845816256 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 845816256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1262429784).

845816256 is an abundant number, since it is smaller than the sum of its proper divisors (1679043312).

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

845816256 is a wasteful number, since it uses less digits than its factorization.

845816256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1168 (or 1149 counting only the distinct ones).

The product of its digits is 460800, while the sum is 45.

The square root of 845816256 is about 29082.9203485482. The cubic root of 845816256 is about 945.7115125261.

The spelling of 845816256 in words is "eight hundred forty-five million, eight hundred sixteen thousand, two hundred fifty-six".