3581056 has 32 divisors (see below), whose sum is σ = 7230780. Its totient is φ = 1766400.

The previous prime is 3581047. The next prime is 3581087. The reversal of 3581056 is 6501853.

It can be written as a sum of positive squares in 2 ways, for example, as 3534400 + 46656 = 1880^2 + 216^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12790 + ... + 13066.

Almost surely, 2^3581056 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 3581056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3615390).

3581056 is an abundant number, since it is smaller than the sum of its proper divisors (3649724).

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

3581056 is a wasteful number, since it uses less digits than its factorization.

3581056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392 (or 380 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 3581056 is about 1892.3678289381. The cubic root of 3581056 is about 152.9925808412.

The spelling of 3581056 in words is "three million, five hundred eighty-one thousand, fifty-six".