3928557 has 8 divisors (see below), whose sum is σ = 5276320. Its totient is φ = 2599920.

The previous prime is 3928553. The next prime is 3928577. The reversal of 3928557 is 7558293.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3928557 - 2² = 3928553 is a prime.

It is a Duffinian number.

3928557 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3928553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4294 + ... + 5127.

It is an arithmetic number, because the mean of its divisors is an integer number (659540).

Almost surely, 2^3928557 is an apocalyptic number.

It is an amenable number.

3928557 is a deficient number, since it is larger than the sum of its proper divisors (1347763).

3928557 is a wasteful number, since it uses less digits than its factorization.

3928557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9563.

The product of its digits is 75600, while the sum is 39.

The square root of 3928557 is about 1982.0587781395. The cubic root of 3928557 is about 157.7893496806.

The spelling of 3928557 in words is "three million, nine hundred twenty-eight thousand, five hundred fifty-seven".