3943128 has 64 divisors (see below), whose sum is σ = 11520000. Its totient is φ = 1124256.

The previous prime is 3943123. The next prime is 3943129. The reversal of 3943128 is 8213493.

3943128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 3943095 and 3943104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3943123) 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 15 ways as a sum of consecutive naturals, for example, 7993 + ... + 8471.

It is an arithmetic number, because the mean of its divisors is an integer number (180000).

Almost surely, 2^3943128 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 3943128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5760000).

3943128 is an abundant number, since it is smaller than the sum of its proper divisors (7576872).

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

3943128 is a wasteful number, since it uses less digits than its factorization.

3943128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509 (or 491 counting only the distinct ones).

The product of its digits is 5184, while the sum is 30.

The square root of 3943128 is about 1985.7310996205. The cubic root of 3943128 is about 157.9841889856.

The spelling of 3943128 in words is "three million, nine hundred forty-three thousand, one hundred twenty-eight".