3961328 has 40 divisors (see below), whose sum is σ = 8877408. Its totient is φ = 1677312.

The previous prime is 3961327. The next prime is 3961333. The reversal of 3961328 is 8231693.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 3961294 and 3961303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3961327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12500 + ... + 12812.

Almost surely, 2^3961328 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 3961328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4438704).

3961328 is an abundant number, since it is smaller than the sum of its proper divisors (4916080).

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

3961328 is a wasteful number, since it uses less digits than its factorization.

3961328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441 (or 435 counting only the distinct ones).

The product of its digits is 7776, while the sum is 32.

The square root of 3961328 is about 1990.3085187980. The cubic root of 3961328 is about 158.2268812307.

The spelling of 3961328 in words is "three million, nine hundred sixty-one thousand, three hundred twenty-eight".