3428257 has 8 divisors (see below), whose sum is σ = 3931200. Its totient is φ = 2928624.

The previous prime is 3428251. The next prime is 3428263. The reversal of 3428257 is 7528243.

3428257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3428251) and next prime (3428263).

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

It is a cyclic number.

It is not a de Polignac number, because 3428257 - 2¹⁵ = 3395489 is a prime.

It is an Ulam number.

3428257 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3428251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2094 + ... + 3352.

It is an arithmetic number, because the mean of its divisors is an integer number (491400).

Almost surely, 2^3428257 is an apocalyptic number.

It is an amenable number.

3428257 is a deficient number, since it is larger than the sum of its proper divisors (502943).

3428257 is a wasteful number, since it uses less digits than its factorization.

3428257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1655.

The product of its digits is 13440, while the sum is 31.

The square root of 3428257 is about 1851.5552921801. Note that the first 3 decimals coincide. The cubic root of 3428257 is about 150.7848785340.

The spelling of 3428257 in words is "three million, four hundred twenty-eight thousand, two hundred fifty-seven".