6428251 has 8 divisors (see below), whose sum is σ = 6805520. Its totient is φ = 6054912.

The previous prime is 6428207. The next prime is 6428263. The reversal of 6428251 is 1528246.

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 6428251 - 2⁹ = 6427739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6428281) 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, 2791 + ... + 4543.

It is an arithmetic number, because the mean of its divisors is an integer number (850690).

Almost surely, 2^6428251 is an apocalyptic number.

6428251 is a deficient number, since it is larger than the sum of its proper divisors (377269).

6428251 is a wasteful number, since it uses less digits than its factorization.

6428251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1965.

The product of its digits is 3840, while the sum is 28.

The square root of 6428251 is about 2535.3995740317. The cubic root of 6428251 is about 185.9363388718.

The spelling of 6428251 in words is "six million, four hundred twenty-eight thousand, two hundred fifty-one".