3791128 has 32 divisors (see below), whose sum is σ = 7882560. Its totient is φ = 1694880.

The previous prime is 3791107. The next prime is 3791167. The reversal of 3791128 is 8211973.

3791128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 3791128.

It is a congruent number.

It is an unprimeable number.

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, 5575 + ... + 6217.

It is an arithmetic number, because the mean of its divisors is an integer number (246330).

Almost surely, 2^3791128 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 3791128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3941280).

3791128 is an abundant number, since it is smaller than the sum of its proper divisors (4091432).

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

3791128 is a wasteful number, since it uses less digits than its factorization.

3791128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727 (or 723 counting only the distinct ones).

The product of its digits is 3024, while the sum is 31.

The square root of 3791128 is about 1947.0819191806. The cubic root of 3791128 is about 155.9275359261.

The spelling of 3791128 in words is "three million, seven hundred ninety-one thousand, one hundred twenty-eight".