3928506 has 16 divisors (see below), whose sum is σ = 8110848. Its totient is φ = 1267200.

The previous prime is 3928493. The next prime is 3928553. The reversal of 3928506 is 6058293.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10375 + ... + 10746.

It is an arithmetic number, because the mean of its divisors is an integer number (506928).

Almost surely, 2^3928506 is an apocalyptic number.

3928506 is an abundant number, since it is smaller than the sum of its proper divisors (4182342).

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

3928506 is a wasteful number, since it uses less digits than its factorization.

3928506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21157.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 3928506 is about 1982.0459126872. The cubic root of 3928506 is about 157.7886668776.

The spelling of 3928506 in words is "three million, nine hundred twenty-eight thousand, five hundred six".