3928806 has 24 divisors (see below), whose sum is σ = 9728784. Its totient is φ = 1122480.

The previous prime is 3928783. The next prime is 3928807. The reversal of 3928806 is 6088293.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3928807) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15465 + ... + 15716.

It is an arithmetic number, because the mean of its divisors is an integer number (405366).

Almost surely, 2^3928806 is an apocalyptic number.

3928806 is an abundant number, since it is smaller than the sum of its proper divisors (5799978).

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

3928806 is a wasteful number, since it uses less digits than its factorization.

3928806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31196 (or 31193 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 3928806 is about 1982.1215906195. The cubic root of 3928806 is about 157.7926832811.

The spelling of 3928806 in words is "three million, nine hundred twenty-eight thousand, eight hundred six".