3280855 has 4 divisors (see below), whose sum is σ = 3937032. Its totient is φ = 2624680.

The previous prime is 3280811. The next prime is 3280867. The reversal of 3280855 is 5580823.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5580823 = 661 ⋅8443.

It is a de Polignac number, because none of the positive numbers 2^k-3280855 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328081 + ... + 328090.

It is an arithmetic number, because the mean of its divisors is an integer number (984258).

Almost surely, 2^3280855 is an apocalyptic number.

3280855 is a deficient number, since it is larger than the sum of its proper divisors (656177).

3280855 is an equidigital number, since it uses as much as digits as its factorization.

3280855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656176.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 3280855 is about 1811.3130596338. The cubic root of 3280855 is about 148.5920857882.

Subtracting 3280855 from its reverse (5580823), we obtain a cube (2299968 = 132³).

The spelling of 3280855 in words is "three million, two hundred eighty thousand, eight hundred fifty-five".