3928071 has 16 divisors (see below), whose sum is σ = 6338304. Its totient is φ = 2112384.

The previous prime is 3928069. The next prime is 3928091. The reversal of 3928071 is 1708293.

It is a happy number.

It is not a de Polignac number, because 3928071 - 2¹ = 3928069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3928091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5145 + ... + 5858.

It is an arithmetic number, because the mean of its divisors is an integer number (396144).

Almost surely, 2^3928071 is an apocalyptic number.

3928071 is a deficient number, since it is larger than the sum of its proper divisors (2410233).

3928071 is a wasteful number, since it uses less digits than its factorization.

3928071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11030.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 3928071 is about 1981.9361745526. The cubic root of 3928071 is about 157.7828427294.

The spelling of 3928071 in words is "three million, nine hundred twenty-eight thousand, seventy-one".