3881256 has 32 divisors (see below), whose sum is σ = 9871200. Its totient is φ = 1271360.

The previous prime is 3881249. The next prime is 3881291. The reversal of 3881256 is 6521883.

It is a happy number.

3881256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

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 7 ways as a sum of consecutive naturals, for example, 46 + ... + 2786.

It is an arithmetic number, because the mean of its divisors is an integer number (308475).

Almost surely, 2^3881256 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 3881256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4935600).

3881256 is an abundant number, since it is smaller than the sum of its proper divisors (5989944).

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

3881256 is a wasteful number, since it uses less digits than its factorization.

3881256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2809 (or 2805 counting only the distinct ones).

The product of its digits is 11520, while the sum is 33.

The square root of 3881256 is about 1970.0903532579. The cubic root of 3881256 is about 157.1535139565.

The spelling of 3881256 in words is "three million, eight hundred eighty-one thousand, two hundred fifty-six".