3928745 has 16 divisors (see below), whose sum is σ = 4976640. Its totient is φ = 2971584.

The previous prime is 3928739. The next prime is 3928753. The reversal of 3928745 is 5478293.

It is a cyclic number.

It is not a de Polignac number, because 3928745 - 2⁶ = 3928681 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3928699 and 3928708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14471 + ... + 14739.

It is an arithmetic number, because the mean of its divisors is an integer number (311040).

Almost surely, 2^3928745 is an apocalyptic number.

It is an amenable number.

3928745 is a deficient number, since it is larger than the sum of its proper divisors (1047895).

3928745 is a wasteful number, since it uses less digits than its factorization.

3928745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424.

The product of its digits is 60480, while the sum is 38.

The square root of 3928745 is about 1982.1062030073. The cubic root of 3928745 is about 157.7918666289.

The spelling of 3928745 in words is "three million, nine hundred twenty-eight thousand, seven hundred forty-five".