3281885 has 4 divisors (see below), whose sum is σ = 3938268. Its totient is φ = 2625504.

The previous prime is 3281857. The next prime is 3281909. The reversal of 3281885 is 5881823.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1943236 + 1338649 = 1394^2 + 1157^2 .

It is a cyclic number.

It is not a de Polignac number, because 3281885 - 2⁶ = 3281821 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

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, 328184 + ... + 328193.

It is an arithmetic number, because the mean of its divisors is an integer number (984567).

Almost surely, 2^3281885 is an apocalyptic number.

It is an amenable number.

3281885 is a deficient number, since it is larger than the sum of its proper divisors (656383).

3281885 is an equidigital number, since it uses as much as digits as its factorization.

3281885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656382.

The product of its digits is 15360, while the sum is 35.

The square root of 3281885 is about 1811.5973614465. The cubic root of 3281885 is about 148.6076339543.

The spelling of 3281885 in words is "three million, two hundred eighty-one thousand, eight hundred eighty-five".