6428057 has 8 divisors (see below), whose sum is σ = 6870600. Its totient is φ = 5992704.

The previous prime is 6428041. The next prime is 6428083. The reversal of 6428057 is 7508246.

6428057 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 687241 + 5740816 = 829^2 + 2396^2 .

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

It is not a de Polignac number, because 6428057 - 2⁴ = 6428041 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6428087) 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, 119 + ... + 3587.

It is an arithmetic number, because the mean of its divisors is an integer number (858825).

Almost surely, 2^6428057 is an apocalyptic number.

It is an amenable number.

6428057 is a deficient number, since it is larger than the sum of its proper divisors (442543).

6428057 is a wasteful number, since it uses less digits than its factorization.

6428057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3595.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 6428057 is about 2535.3613154736. The cubic root of 6428057 is about 185.9344683779.

The spelling of 6428057 in words is "six million, four hundred twenty-eight thousand, fifty-seven".