3945328 has 40 divisors (see below), whose sum is σ = 8142336. Its totient is φ = 1848000.

The previous prime is 3945323. The next prime is 3945329. The reversal of 3945328 is 8235493.

It is a happy number.

3945328 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3945328² = 31131226055168, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3945293 and 3945302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3945323) 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 in 7 ways as a sum of consecutive naturals, for example, 26053 + ... + 26203.

Almost surely, 2^3945328 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 3945328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4071168).

3945328 is an abundant number, since it is smaller than the sum of its proper divisors (4197008).

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

3945328 is a wasteful number, since it uses less digits than its factorization.

3945328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253 (or 247 counting only the distinct ones).

The product of its digits is 25920, while the sum is 34.

The square root of 3945328 is about 1986.2849745190. The cubic root of 3945328 is about 158.0135650373.

The spelling of 3945328 in words is "three million, nine hundred forty-five thousand, three hundred twenty-eight".