3856578 has 32 divisors (see below), whose sum is σ = 8543232. Its totient is φ = 1150800.

The previous prime is 3856561. The next prime is 3856579. The reversal of 3856578 is 8756583.

3856578 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3856579) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4275 + ... + 5097.

It is an arithmetic number, because the mean of its divisors is an integer number (266976).

Almost surely, 2^3856578 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3856578, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4271616).

3856578 is an abundant number, since it is smaller than the sum of its proper divisors (4686654).

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

3856578 is a wasteful number, since it uses less digits than its factorization.

3856578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910.

The product of its digits is 201600, while the sum is 42.

The square root of 3856578 is about 1963.8172012690. The cubic root of 3856578 is about 156.8197316988.

It can be divided in two parts, 38 and 56578, that added together give a triangular number (56616 = T₃₃₆).

The spelling of 3856578 in words is "three million, eight hundred fifty-six thousand, five hundred seventy-eight".