3928125 has 24 divisors (see below), whose sum is σ = 6562080. Its totient is φ = 2090000.

The previous prime is 3928123. The next prime is 3928151. The reversal of 3928125 is 5218293.

It is a happy number.

It is not a de Polignac number, because 3928125 - 2¹ = 3928123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3928092 and 3928101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3928123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9166 + ... + 9584.

It is an arithmetic number, because the mean of its divisors is an integer number (273420).

Almost surely, 2^3928125 is an apocalyptic number.

It is an amenable number.

3928125 is a deficient number, since it is larger than the sum of its proper divisors (2633955).

3928125 is an frugal number, since it uses more digits than its factorization.

3928125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447 (or 427 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 3928125 is about 1981.9497975479. The cubic root of 3928125 is about 157.7835657505.

The spelling of 3928125 in words is "three million, nine hundred twenty-eight thousand, one hundred twenty-five".