3978328 has 8 divisors (see below), whose sum is σ = 7459380. Its totient is φ = 1989160.

The previous prime is 3978301. The next prime is 3978329. The reversal of 3978328 is 8238793.

It is a happy number.

3978328 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3978329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248638 + ... + 248653.

Almost surely, 2^3978328 is an apocalyptic number.

It is an amenable number.

3978328 is a deficient number, since it is larger than the sum of its proper divisors (3481052).

3978328 is a wasteful number, since it uses less digits than its factorization.

3978328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497297 (or 497293 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 3978328 is about 1994.5746413709. The cubic root of 3978328 is about 158.4529012503.

It can be divided in two parts, 397832 and 8, that multiplied together give a square (3182656 = 1784²).

The spelling of 3978328 in words is "three million, nine hundred seventy-eight thousand, three hundred twenty-eight".