3278881 has 4 divisors (see below), whose sum is σ = 3287700. Its totient is φ = 3270064.

The previous prime is 3278867. The next prime is 3278917. The reversal of 3278881 is 1888723.

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 654481 + 2624400 = 809^2 + 1620^2 .

It is a cyclic number.

It is not a de Polignac number, because 3278881 - 2⁷ = 3278753 is a prime.

It is a super-2 number, since 2×3278881² = 21502121224322, which contains 22 as substring.

It is a Duffinian number.

3278881 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3278881.

It is not an unprimeable number, because it can be changed into a prime (3278831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3826 + ... + 4603.

It is an arithmetic number, because the mean of its divisors is an integer number (821925).

Almost surely, 2^3278881 is an apocalyptic number.

It is an amenable number.

3278881 is a deficient number, since it is larger than the sum of its proper divisors (8819).

3278881 is an equidigital number, since it uses as much as digits as its factorization.

3278881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8818.

The product of its digits is 21504, while the sum is 37.

The square root of 3278881 is about 1810.7680690801. The cubic root of 3278881 is about 148.5622785556.

The spelling of 3278881 in words is "three million, two hundred seventy-eight thousand, eight hundred eighty-one".