3408640 has 36 divisors (see below), whose sum is σ = 8167824. Its totient is φ = 1362944.

The previous prime is 3408599. The next prime is 3408641. The reversal of 3408640 is 468043.

It is not an unprimeable number, because it can be changed into a prime (3408641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52 + ... + 2611.

It is an arithmetic number, because the mean of its divisors is an integer number (226884).

Almost surely, 2^3408640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3408640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4083912).

3408640 is an abundant number, since it is smaller than the sum of its proper divisors (4759184).

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

3408640 is an equidigital number, since it uses as much as digits as its factorization.

3408640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2684 (or 2670 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 3408640 is about 1846.2502538930. The cubic root of 3408640 is about 150.4967236587.

The spelling of 3408640 in words is "three million, four hundred eight thousand, six hundred forty".