3280256 has 48 divisors (see below), whose sum is σ = 7616340. Its totient is φ = 1403136.

The previous prime is 3280231. The next prime is 3280279. The reversal of 3280256 is 6520823.

It is a plaindrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6011 + ... + 6533.

Almost surely, 2^3280256 is an apocalyptic number.

3280256 is the 1046-th octagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3280256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3808170).

3280256 is an abundant number, since it is smaller than the sum of its proper divisors (4336084).

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

3280256 is an equidigital number, since it uses as much as digits as its factorization.

3280256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551 (or 532 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 3280256 is about 1811.1477024252. The cubic root of 3280256 is about 148.5830422029.

The spelling of 3280256 in words is "three million, two hundred eighty thousand, two hundred fifty-six".