3021648 has 120 divisors (see below), whose sum is σ = 9874368. Its totient is φ = 777216.

The previous prime is 3021643. The next prime is 3021649. The reversal of 3021648 is 8461203.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3021643) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 131365 + ... + 131387.

Almost surely, 2^3021648 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 3021648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4937184).

3021648 is an abundant number, since it is smaller than the sum of its proper divisors (6852720).

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

3021648 is a wasteful number, since it uses less digits than its factorization.

3021648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81 (or 52 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 3021648 is about 1738.2888137476. The cubic root of 3021648 is about 144.5710350245.

The spelling of 3021648 in words is "three million, twenty-one thousand, six hundred forty-eight".