3255840 has 288 divisors, whose sum is σ = 14152320. Its totient is φ = 663552.

The previous prime is 3255817. The next prime is 3255853. The reversal of 3255840 is 485523.

It is a tau number, because it is divible by the number of its divisors (288).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 171351 + ... + 171369.

It is an arithmetic number, because the mean of its divisors is an integer number (49140).

Almost surely, 2^3255840 is an apocalyptic number.

3255840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3255840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7076160).

3255840 is an abundant number, since it is smaller than the sum of its proper divisors (10896480).

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

3255840 is a wasteful number, since it uses less digits than its factorization.

3255840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 3255840 is about 1804.3946353279. The cubic root of 3255840 is about 148.2134732898.

It can be divided in two parts, 3255 and 840, that added together give a triangular number (4095 = T₉₀).

The spelling of 3255840 in words is "three million, two hundred fifty-five thousand, eight hundred forty".