3928648 has 8 divisors (see below), whose sum is σ = 7366230. Its totient is φ = 1964320.

The previous prime is 3928637. The next prime is 3928651. The reversal of 3928648 is 8468293.

It can be written as a sum of positive squares in only one way, i.e., 3928324 + 324 = 1982^2 + 18^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 3928648.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245533 + ... + 245548.

Almost surely, 2^3928648 is an apocalyptic number.

It is an amenable number.

3928648 is a deficient number, since it is larger than the sum of its proper divisors (3437582).

3928648 is a wasteful number, since it uses less digits than its factorization.

3928648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491087 (or 491083 counting only the distinct ones).

The product of its digits is 82944, while the sum is 40.

The square root of 3928648 is about 1982.0817339353. The cubic root of 3928648 is about 157.7905680007.

The spelling of 3928648 in words is "three million, nine hundred twenty-eight thousand, six hundred forty-eight".