578213856 has 192 divisors, whose sum is σ = 1864477440. Its totient is φ = 172869120.

The previous prime is 578213851. The next prime is 578213873. The reversal of 578213856 is 658312875.

578213856 is a `hidden beast` number, since 578 + 21 + 3 + 8 + 56 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (578213851) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 788466 + ... + 789198.

It is an arithmetic number, because the mean of its divisors is an integer number (9710820).

Almost surely, 2^578213856 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 578213856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (932238720).

578213856 is an abundant number, since it is smaller than the sum of its proper divisors (1286263584).

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

578213856 is a wasteful number, since it uses less digits than its factorization.

578213856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846 (or 832 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 578213856 is about 24046.0777674863. The cubic root of 578213856 is about 833.0981400628.

The spelling of 578213856 in words is "five hundred seventy-eight million, two hundred thirteen thousand, eight hundred fifty-six".