3243648 has 32 divisors (see below), whose sum is σ = 8616960. Its totient is φ = 1081088.

The previous prime is 3243637. The next prime is 3243649. The reversal of 3243648 is 8463423.

It is a tau number, because it is divible by the number of its divisors (32).

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (3243649) 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, 3840 + ... + 4607.

It is an arithmetic number, because the mean of its divisors is an integer number (269280).

Almost surely, 2^3243648 is an apocalyptic number.

It is an amenable number.

3243648 is an abundant number, since it is smaller than the sum of its proper divisors (5373312).

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

3243648 is an equidigital number, since it uses as much as digits as its factorization.

3243648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8464 (or 8452 counting only the distinct ones).

The product of its digits is 13824, while the sum is 30.

The square root of 3243648 is about 1801.0130482592. The cubic root of 3243648 is about 148.0282390722.

The spelling of 3243648 in words is "three million, two hundred forty-three thousand, six hundred forty-eight".